2-150 PHYSICAL AND CHEMICAL DATA TABLE 2-189 Compressibilities of Solids Many data on the compressibility of solids obtained prior to 1926 are contained in Gruneisen, Handbuch der Physik, vol. 10, Springer, Berlin, 1926, pp. 1 52; also available as translation, NASA RE 2-18-59W, 1959. See also Tables 271, 273, 276, 278, and other material in Smithsonian Physical Tables, 9th ed., 1954. For a review of high-pressure work to 1946, see Bridgman, Rev. Mod. Phys., 18, 1 (1946). LATENT HEATS UNITS CONVERSIONS For this subsection, the following units conversions are applicable: F = 9 5 C + 32. To convert calories per gram-mole to British thermal units per pound-mole, multiply by 1.799; to convert calories per gram to British thermal units per pound, multiply by 1.799. To convert millimeters of mercury to pounds-force per square inch, multiply by 1.934 10 2.
LATENT HEATS 2-151 TABLE 2-190 Heats of Fusion and Vaporization of the Elements and Inorganic Compounds* Unless stated otherwise, the values have been taken from the compilations by K. K. Kelley on Heats of Fusion of Inorganic Compounds, U.S. Bur. Mines Bull. 393 (1936), and The Free Energies of Vaporization and Vapor Pressures of Inorganic Substances, U.S. Bur. Mines Bull. 383 (1935). Heat of Heat of Heat of Heat of fusion, a,b bp at 1 vaporization, a,b fusion, a,b bp at 1 vaporization, a,b Substance mp, C cal/mole atm, C cal/mole Substance mp, C cal/mole atm, C cal/mole Aluminum Carbon (Cont.) Al 660.0 2,550 2057 61,020 CNF 72.8 5,780 c Al2Br6 97.5 5,420 256.4 10,920 CNI 141 13,980 c Al2Cl6 192.5 16,960 180.2 c 26,750 c CO 205.0 200 191.5 1,444 AlF3 3NaF 1000 16,380 CO2 57.5 1,900 78.4 c 6,030 c, r Al2I6 191.0 7,960 385.5 15,360 COS 138.8 1,129 k 50.2 4,423 k Al2O3 2045 (26,000) 3000 COCl2 8.0 5,990 Antimony CS2 112.0 1,049 l Sb 630.5 4,770 1440 46,670 Cerium SbBr3 97 3,510 Ce 775 2,120 SbCl3 73.4 3,030 219 10,360 Cesium SbCl5 4 2,400 172 d 11,570 Cs 28.4 500 690 16,320 Sb4O6 655 (27,000) 1425 17,820 CsBr 1300 35,990 Sb4S6 546 11,200 CsCl 642 3,600 1300 35,690 Argon CsF 715 (2,450) 1251 34,330 A 189.3 290 185.8 1,590 CsI 1280 35,930 Arsenic CsNO3 407 3,250 As 814 (6,620) 610 c 31,000 c Chlorine AsBr3 31 2,810 Cl2 101.0 1,531 m 34.1 4,878 m AsCl3 16 2,420 122 7,570 ClF 101 AsF5 80.7 2,800 52.8 4,980 ClF3 11.3 5,890 As4O6 313 8,000 457.2 14,300 Cl2O 2.0 6,280 Barium ClO2 10.9 7,100 Ba 704 (1,400) e 1638 35,670 Cl2O7 79 8,480 BaBr2 847 6,000 Chromium BaCl2 960 5,370 Cr 1550 3,930 2475 BaF2 1287 3,000 CrO2Cl2 117 8,250 Ba(NO3)2 595 (5,980) Cobalt Ba3(PO4)2 1730 18,600 Co 1490 3,660 BaSO4 1350 9,700 CoCl2 727 7,390 1050 27,170 Beryllium Copper Be 1280 2,500 e Cu 1083.0 3,110 2595 72,810 Bismuth Cu2Br2 1355 16,310 Bi 271.3 2,505 1420 Cu2Cl2 430 4,890 1490 11,920 BiBr3 461 18,020 CuI 1336 15,940 BiCl3 224 2,600 441 17,350 Cu2(CN)2 473 (5,400) Bi2O3 817 6,800 Cu2O 1230 (13,400) Bi2S5 747 8,900 CuO 1447 2,820 Boron Cu2S 1127 5,500 BBr3 91.3 7,300 Fluorine BCl3 12.5 5,680 F2 223 188.2 1,640 BF3 128 480 100.9 4,620 F2O 144.8 2,650 B2H6 165.5 92.4 3,685 Gallium B3H10 119.8 16 6,470 Ga 29.8 1,336 2071 B5H9 46.9 58 7,700 Germanium B5H11 67 8,500 Ge 959 (8,300) B10H14 99.7 7,800 f 11,600 GeH4 165 89.1 3,580 B2H5Br 104 16 6,230 Ge2H6 109 31.4 5,900 B3N3H6 58 50.4 7,670 Ge3H8 105.6 110.6 7,550 Bromine GeHCl3 71 75 g 8,000 Br2 7.2 2,580 58.0 7,420 GeBr4 26.1 189 8,560 BrF5 61.3 1,355 40.4 7,470 GeCl4 49.5 84 7,030 Cadmium Ge(CH3)4 88 44 6,460 Cd 320.9 1,460 765 23,870 Gold CdBr2 568 (5,000) Au 1063.0 3,030 2966 81,800 CdCl2 568 5,300 967 29,860 Helium CdF2 1110 (5,400) He 271.4 268.4 22 CdI2 387 3,660 796 25,400 Hydrogen CdO 1559 c 53,820 c H2 259.2 28 252.7 216 CdSO4 1000 4,790 HBr 86.9 575 66.7 4,210 Calcium HCl 114.2 476 85.0 3,860 Ca 851 2,230 1487 36,580 HCN 13.2 2,009 i 25.7 6,027 i CaBr2 730 4,180 HF 83.0 1,094 33.3 7,460 CaCO3 1282 (12,700) (HF)6 51.2 5,020 CaCl2 782 6,100 HI 50.8 686 CaF2 1392 4,100 H2O 0.0 1,436 100.0 9,729 h,q Ca(NO3)2 561 5,120 H2 2 O (= D2O) 3.8 1,501 s 101.4 9,945 r,q CaO 2707 (12,240) H2O2 2 2,520 c 158 10,270 CaO Al2O3 2SiO2 1550 29,400 HNO3 47 600 CaO MgO 2SiO2 1392 (18,200) H3PO2 17.4 2,310 CaO SiO2 1512 13,400 H3PO3 74 3,070 CaSO4 1297 6,700 H3PO4 42.4 2,520 Carbon H4P2O6 55 8,300 C (graphite) 3600 11,000 e H2S 85.5 568 t 60.3 4,463 t CBr4 90 1,050 H2S2 87.6 1,805 CCl4 24.0 644 77 7,280 H2SO4 10.5 2,360 CF4 127.9 3,110 H2Se 41.3 4,880 CH4 182.5 224 161.4 2,040 H2SeO4 58 3,450 C2N2 27.8 1,938 u 21.1 5,576 u H2Te 48.9 1,670 2.2 5,650 CNBr 52 11,010 c Indium CNCl 5 2,240 13 6,300 In 156.4 781 *See also subsection Thermodynamic Properties.
2-152 PHYSICAL AND CHEMICAL DATA TABLE 2-190 Heats of Fusion and Vaporization of the Elements and Inorganic Compounds (Continued) Heat of Heat of Heat of Heat of fusion, a,b bp at 1 vaporization, a,b fusion, a,b bp at 1 vaporization, a,b Substance mp, C cal/mole atm, C cal/mole Substance mp, C cal/mole atm, C cal/mole Iodine Palladium I 2 113.0 3,650 183 10,390 Pd 1554 4,120 ICl(α) 17.2 2,660 Phosphorus ICl(β) 13.9 2,270 P 4 (yellow) 44.2 615 280 12,520 IF 7 4 c 7,460 c P 4 (violet) 417 c 25,600 c Iron P 4 (black) 453 c 33,100 Fe 1530 3,560 2735 84,600 PCl 3 74.2 7,280 FeCl 2 677 7,800 1026 30,210 PH 3 133.8 270 o 87.7 3,489 o Fe 2Cl 6 304 20,590 319 12,040 P 4O 6 23.8 3,360 174 10,380 Fe(CO) 5 21 3,250 105 9,000 P 4O 10(α) 569 17,080 591 20,670 FeO 1380 (7,700) P 4O 10(β) 358 c FeS 1195 5,000 POCl 3 1.1 3,110 105.1 8,380 Krypton P 2S 3 508 Kr 157 360 e 152.9 2,310 e Platinum Lead Pt 1773.5 4,700 (4400) (107,000) Pb 327.4 1,224 1744 42,060 Potassium PbBr 2 488 4,290 914 27,700 K 63.5 574 776 18,920 PbCl 2 498 5,650 954 29,600 KBO 2 947 (5,700) PbF 2 824 1,860 1293 38,300 KBr 742 5,000 1383 37,060 PbI 2 412 5,970 872 24,850 KCl 770 6,410 1407 38,840 PbMoO 4 1065 (25,800) KCN 623 (3,500) PbO 890 2,820 1472 51,310 KCNS 179 2,250 PbS 1114 4,150 1281 (50,000) K 2CO 3 897 7,800 PbSO 4 1087 9,600 K 2CrO 4 984 6,920 PbWO 4 1123 (15,200) K 2Cr 2O 7 398 8,770 Lithium KF 857 6,500 Li 179 1,100 1372 32,250 KI 682 4,100 1324 34,690 LiBO 2 845 (5,570) K 2MoO 4 922 (4,000) LiBr 552 2,900 1310 35,420 KNO 3 338 2,840 LiCl 614 3,200 1382 35,960 KOH 360 (2,000) 1327 30,850 LiF 847 (2,360) 1681 50,970 KPO 3 817 2,110 LiI 440 (1,420) 1171 40,770 K 3PO 4 1340 8,900 LiOH 462 2,480 K 4P 2O 7 1092 14,000 Li 2MoO 4 705 4,200 K 2SO 4 1074 8,100 LiNO 3 K 2TiO 3 810 (10,600) Li 2SiO 3 1177 7,210 K 2WO 4 927 (4,400) Li 4SiO 4 1249 7,430 Praseodymium Li 2SO 4 857 3,040 Pr 932 2,700 Li 2WO 4 742 (6,700) Radon Magnesium Rn 71 61.8 4,010 Mg 650 2,160 1107 32,520 Rhenium MgBr 2 711 8,300 Re (3000) MgCl 2 712 8,100 1418 32,690 Re 2O 7 296 15,340 362.4 18,060 MgF 2 1221 5,900 Re 2O 8 147 3,800 MgO 2642 18,500 Rubidium Mg 3(PO 4) 2 1184 (11,300) Rb 39.1 525 679 18,110 MgSiO 3 1524 14,700 RbBr 677 3,700 1352 37,120 MgSO 4 1127 3,500 RbCl 717 4,400 1381 36,920 MgZn 2 589 (8,270) RbF 833 4,130 1408 39,510 Manganese RbI 638 2,990 1304 35,960 Mn 1220 3,450 2152 55,150 RbNO 3 305 1,340 MnCl 2 650 7,340 1190 29,630 Selenium MnSiO 3 1274 (8,200) Se 2 217 1,220 753 25,490 MnTiO 3 1404 (7,960) Se 6 736 20,600 Mercury SeF 6 45.8 c 6,350 c Hg 38.9 557 361 13,980 SeO 2 317 c 20,900 HgBr 2 241 3,960 319 14,080 SeOCl 2 10 1,010 168 HgCl 2 277 4,150 304 14,080 Silicon HgI 2 250 4,500 354 14,260 Si 1427 9,470 2290 HgSO 4 850 (1,440) SiCl 4 67.6 1,845 56.8 6,860 Molybdenum Si 2Cl 6 1 139 Mo 2622 (6,660) (4800) (128,000) Si 3Cl 8 211.4 12,340 MoF 6 17 2,500 36 6,000 (SiCl 3) 2O 33 135.6 8,820 MoO 3 745 (2,500) 1151 SiF 4 94.8 c 6,130 c Neon Si 2F 6 18.5 3,900 18.9 c 10,400 c Ne 248.5 77 246.0 440 e SiF 3Cl 138 70.1 4,460 Nickel SiF 2Cl 2 144 31.5 5,080 Ni 1455 4,200 2730 87,300 SiH 4 185 111.6 2,960 NiCl 2 987 c 48,360 c Si 2H 6 132.5 14.3 5,110 Ni(CO) 4 42.5 7,000 Si 3H 8 117 53.1 6,780 Ni 2S 645 (2,980) Si 4H 10 93.5 100 8,890 Ni 3S 2 790 5,800 SiH 3Br 93.8 2.4 5,650 Nitrogen SiH 2Br 2 70.0 70.5 6,840 N 2 210.0 172 195.8 1,336 SiHCl 3 126.5 31.8 6,360 NF 3 129.0 3,000 (SiH 3) 3N 105.6 48.7 6,850 NH 3 77.7 1,352 n 33.4 5,581 n (SiH 3) 2O 144 15.4 5,350 NH 4CNS 146 (4,700) SiO 2 (quartz) 1470 3,400 2230 NH 4NO 3 169.6 1,460 SiO 2 (cristobalite) 1700 2,100 N 2O 90.8 1,563 88.5 3,950 Silver NO 163.6 550 151.7 3,307 Ag 960.5 2,700 2212 60,720 N 2O 4 13 5,540 30 7,040 AgBr 430 2,180 N 2O 5 32.4 13,800 c AgCl 455 3,155 1564 42,520 NOCl 6.4 6,140 AgCN 350 2,750 Osmium AgI 557 2,250 1506 34,450 OsF 8 47.4 6,840 AgNO 3 209 2,755 OsO 4 (yellow) 56 4,060 130 9,450 Ag 2S 842 3,360 OsO 4 (white) 42 2,340 Ag 2SO 4 657 (4,300) Oxygen Sodium O 2 218.9 106 183.0 1,629 Na 97.7 630 914 23,120 O 3 111 2,880 NaBO 2 966 8,660
LATENT HEATS 2-153 TABLE 2-190 Heats of Fusion and Vaporization of the Elements and Inorganic Compounds (Concluded) Heat of Heat of Heat of Heat of fusion, a,b bp at 1 vaporization, a,b fusion, a,b bp at 1 vaporization, a,b Substance mp, C cal/mole atm, C cal/mole Substance mp, C cal/mole atm, C cal/mole Sodium (Cont.) Thallium NaBr 747 6,140 1392 37,950 Tl 302.5 1,030 1457 38,810 NaCl 800 7,220 1465 40,810 TlBr 460 5,990 819 23,800 NaClO 3 255 5,290 TlCl 427 4,260 807 24,420 NaCN 562 (4,400) 1500 37,280 Tl 2CO 3 273 4,400 NaCNS 323 4,450 TlI 440 3,125 823 25,030 Na 2CO 3 854 7,000 TlNO 3 207 2,290 NaF 992 7,000 1704 53,260 Tl 2S 449 3,000 NaI 662 5,240 Tl 2SO 4 632 5,500 Na 2MoO 4 687 3,600 Tin NaNO 3 310 3,760 Sn 4 231.8 1,720 2270 68,000 NaOH 322 2,000 1378 SnBr 2 232 (1,700) ana 2O aal 2O 3 3SiO 2 1107 13,150 SnBr 4 30 3,000 NaPO 3 988 (5,000) SnCl 2 247 3,050 623 20,740 Na 4P 2O 7 970 (13,700) SnCl 4 33.2 2,190 113 8,330 Na 2S 920 (1,200) Sn(CH 3) 4 78.3 7,320 Na 2SiO 3 1087 10,300 SnH 4 149.8 52.3 4,420 Na 2Si 2O 5 884 8,460 SnI 4 143.5 (4,300) Na 2SO 4 884 5,830 Titanium Na 2WO 4 702 5,800 TiBr 4 38.2 (2,060) Strontium TiCl 4 23 2,240 136 8,350 Sr 757 2,190 1384 33,610 TiO 2 1825 (11,400) SrBr 2 643 4,780 Tungsten SrCl 2 872 4,100 W 3390 (8,400) (5900) (176,000) SrF 2 1400 4,260 WF 6 0.4 1,800 17.3 6,350 Sr 3(PO 4) 2 1770 18,500 Uranium Sulfur UF 6 55.1 c 9,990 c S (rhombic) 112.8 444.6 2,200 Xenon S (monoclinic) 119.2 Xe 111.5 740 108.0 3,110 S 2Cl 2 138 8,720 Zinc SF 6 63.5 c 5,600 c Zn 419.5 1,595 907 27,430 SO 2 75.5 1,769 p 5.0 5,960 p ZnCl 2 283 (5,500) 732 28,710 SO 3(α) 17 2,060 44.8 10,190 Zn(C 2H 5) 2 118 8,960 SO 3(β) 32.4 2,890 ZnO 1975 4,470 SO 3(γ) 62.2 6,310 ZnS 1645 (9,000) SOBr 2 139.5 9,920 Zirconium SOCl 2 75.4 7,600 ZrBr 4 357 c 25,800 c SO 2Cl 2 69.2 7,760 ZrCl 4 311 c 25,290 c Tellurium ZrI 4 431 c 29,030 c Te 453 3,230 1090 ZrO 2 2715 20,800 TeCl 4 392 16,830 TeF 6 38.6 c 6,700 c a Values in parentheses are uncertain. b For the freezing point or the normal boiling point unless otherwise stated. c Sublimation. d Decomposes at about 75 C; value obtained by extrapolation. e Bichowsky and Rossini, Thermochemistry of the Chemical Substances, Reinhold, New York (1936). f Decomposes before the normal boiling point is reached. g Decomposes at about 40 C; value obtained by extrapolation. h See also pp. 2-304 through 2-307 on steam table. i Giauque and Ruehrwein, J. Am. Chem. Soc., 61 (1939): 2626. j Giauque and Egan, J. Chem. Phys., 5 (1937): 45. k Kemp and Giauque, J. Am. Chem. Soc., 59 (1937): 79. l Brown and Manov, J. Am. Chem. Soc., 59 (1937): 500. m Giauque and Powell, J. Am. Chem. Soc. 61 (1939): 1970. n Overstreet and Giauque, J. Am. Chem. Soc 59 (1937): 254. o Stephenson and Giauque, J. Chem. Phys., 5 (1937): 149. p Giauque and Stephenson, J. Am. Chem. Soc., 60 (1938): 1389. q Osborne, Stimson, and Ginnings, Bur. Standards J. Research, 23, 197 (1939): 261. r Miles and Menzies, J. Am. Chem. Soc., 58 (1936): 1067. s Long and Kemp, J. Am. Chem. Soc., 58 (1936): 1829. t Giauque and Blue, J. Am. Chem. Soc., 58 (1936): 831. u Ruehrwein and Giauque, J. Am. Chem. Soc., 61 (1939): 2940. TABLE 2-191 Heats of Fusion of Miscellaneous Materials Material mp, C Heat of fusion, cal/g Alloys 30.5 Pb + 69.5 Sn 183 17 36.9 Pb + 63.1 Sn 179 15.5 63.7 Pb + 36.3 Sn 177.5 11.6 77.8 Pb + 22.2 Sn 176.5 9.54 1 Pb + 9 Sn 236 28 24 Pb + 27.3 Sn + 48.7 Bi 98.8 6.85 25.8 Pb + 14.7 Sn + 52.4 Bi + 7 Cd 75.5 8.4 Silicates Anorthite (CaAl 2 Si 2 O 8 ) 100 Orthoclase (KAlSi 2 O 8 ) 100 Microcline (KAlSi 3 O 8 ) 83 Wollastonite (CaSiO 8 ) 100 Malacolite (Ca 8 MgSi 4 O 12 ) 94 Diopside (CaMgSi 2 O 4 ) 100 Olivine (Mg 2 SiO 4 ) 130 Fayalite (Fe 2 SiO 4 ) 85 Spermaceti 43.9 37.0 Wax (bees ) 61.8 42.3
2-154 PHYSICAL AND CHEMICAL DATA TABLE 2-192 Heats of Fusion of Organic Compounds The values for the hydrocarbons are from the tables of the American Petroleum Institute Research Project 44 at the National Bureau of Standards, with some from Parks and Huffman, Ind. Eng. Chem., 23, 1138 (1931). The values for the nonhydrocarbon compounds were recalculated from data in International Critical Tables, vol. 5. Heat of fusion, Heat of fusion, Hydrocarbon compounds Formula mp, C cal/g Hydrocarbon compounds Formula mp, C cal/g Paraffins Aromatics (Cont.) Methane CH4 182.48 14.03 1-Methyl-3-ethylbenzene C9H12 95.55 15.14 Ethane C2H6 183.23 22.712 1-Methyl-4-ethylbenzene C9H12 62.350 25.29 Propane C3H8 187.65 19.100 1,2,3-Trimethylbenzene C9H12 25.375 16.64 n-butane C4H10 138.33 19.167 1,2,4-Trimethylbenzene C9H12 43.80 24.54 2-Methylpropane C4H10 159.60 18.668 1,3,5-Trimethylbenzene C9H12 44.720 18.97 n-pentane C5H12 129.723 27.874 Naphthalene C10H8 +80.0 36.0 2-Methylbutane C5H12 159.890 17.076 Camphene C10H12 +51 57 2,2-Dimethylpropane C5H12 16.6 10.786 Durene C10H14 +79.3 37.4 n-hexane C6H14 95.320 36.138 Isodurene C10H14 24.0 23.0 2-Methylpentane C6H14 153.680 17.407 Prehnitene C10H14 7.7 20.0 2,2-Dimethylbutane C6H14 99.73 1.607 p-cymene C10H14 68.9 17.1 2,3-Dimethylbutane C6H14 128.41 2.251 n-butyl benzene C10H14 88.5 19.5 n-heptane C7H16 90.595 33.513 tert-butyl benzene C10H14 58.1 14.9 2-Methylhexane C7H16 118.270 21.158 β-methyl naphthalene C11H10 +34.1 20.1 3-Ethylpentane C7H16 118.593 22.555 Diphenyl C12H10 +68.6 28.8 2,2-Dimethylpentane C7H16 123.790 13.982 Hexamethyl benzene C12H18 +165.5 30.4 2,4-Dimethylpentane C7H16 119.230 15.968 Diphenyl methane C13H12 +25.2 26.4 3,3-Dimethylpentane C7H16 134.46 16.856 Anthracene C14H10 +216.5 38.7 2,2,3-Trimethylbutane C7H16 24.96 5.250 Phenanthrene C14H10 +96.3 25.0 n-octane C8H18 56.798 43.169 Tolane C14H10 +60 28.7 2-Methylheptane C8H18 109.04 21.458 Stilbene C14H12 +124 40.0 3-Methylpentane C8H18 120.50 23.795 Dibenzil C14H14 +51.4 30.7 4-Methylheptane C8H18 120.955 22.692 Triphenyl methane C19H16 +92.1 21.1 2,2-Dimethylhexane C8H18 121.18 24.226 Alkyl cyclohexanes 2,5-Dimethylhexane C8H18 91.200 26.903 Cyclohexane C6H12 +6.67 7.569 3,3-Dimethylhexane C8H18 126.10 14.9 Methylcyclohexane C7H14 126.58 16.429 2-Methyl-3-ethylpentane C8H18 114.960 23.690 Alkyl cyclopentanes 3-Methyl-3-ethylpentane C8H18 90.870 22.657 Cyclopentane C5H10 93.80 2.068 2,2,3-Trimethylpentane C8H18 112.27 18.061 Methylcyclopentane C6H12 142.445 19.68 2,2,4-Trimethylpentane C8H18 107.365 19.278 Ethylcyclopentane C7H14 138.435 11.10 2,3,3-Trimethylpentane C8H18 100.70 3.204 1,1-Dimethylcyclopentane C7H14 69.73 3.36 2,3,4-Trimethylpentane C8H18 109.210 19.392 cis-1,2-dimethylcyclopentane C7H14 53.85 3.87 2,2,3,3-Tetramethylbutane C8H18 +100.69 14.900 trans-1,2-dimethylcyclopentane C7H14 117.57 15.68 n-nonane C9H20 53.9 41.2 trans-1,3-dimethylcyclopentane C7H14 133.680 17.93 n-decane C10H22 30.0 48.3 Monoolefins n-undecane C11H24 25.9 34.1 Ethene (Ethylene) C2H4 169.15 28.547 n-dodecane C12H26 9.6 51.3 Propene (Propylene) C3H6 185.25 17.054 Eicosane C20H42 +36.4 52.0 1-Butene C4H8 185.35 16.393 Pentacosane C25H52 +53.3 53.6 cis-2-butene C4H8 138.91 31.135 Tritriacontane C33H68 +71.1 54.0 trans-2-butene C4H8 105.55 41.564 Aromatics 2-Methylpropene (isobutene) C4H8 140.35 25.265 Benzene C6H6 +5.533 30.100 1-Pentene C5H10 165.27 16.82 Methylbenzene (Toluene) C7H8 94.991 17.171 cis-2-pentene C5H10 151.363 24.239 Ethylbenzene C8H10 94.950 20.629 trans-2-pentene C5H10 140.235 26.536 o-xylene C8H10 25.187 30.614 2-Methyl-1-butene C5H10 137.560 26.879 m-xylene C8H10 47.872 26.045 3-Methyl-1-butene C5H10 168.500 18.009 p-xylene C8H10 +13.263 38.526 2-Methyl-2-butene C5H10 133.780 25.738 n-propylbenzene C9H12 99.500 16.97 Acetylenes Isopropylbenzene C9H12 96.028 19.22 Acetylene C2H2 81.5 23.04 1-Methyl-2-ethylbenzene C9H12 80.833 21.13 2-Butyne (dimethylacetylene) C4H6 132.23 40.808 Heat of fusion, Heat of fusion, Nonhydrocarbon compounds Formula mp, C cal/g Nonhydrocarbon compounds Formula mp, C cal/g Acetic acid C2H4O2 16.7 46.68 Butyl alcohol (n-) C4H10O 89.2 29.93 Acetone C3H6O 95.5 23.42 (t-) C4H10O 25.4 21.88 Acrylic acid C3H4O2 12.3 37.03 Butyric acid (n-) C4H8O2 5.7 30.04 Allo-cinnamic acid C9H8O2 68 27.35 Aminobenzoic acid (o-) C7H7NO2 145 35.48 Capric acid (n-) C10H20O2 31.99 38.87 (m-) C7H7NO2 179.5 38.03 Caprylic acid (n-) C8H16O2 16.3 35.40 (p-) C7H7NO2 188.5 36.46 Carbazole C12H9N 243 42.05 Amyl alcohol C5H12O 78.9 26.65 Carbon tetrachloride CCl4 22.8 41.57 Anethole C10H12O 22.5 25.80 Carvoxime (d-) C10H15NO 71.5 23.29 Aniline C6H5NH2 6.3 27.09 (l-) C10H15NO 71 23.41 Anthraquinone C14H8O2 284.8 37.48 (dl-) C10H15NO 91 24.61 Apiol C12H14O4 29.5 25.80 Cetyl alcohol C16H34O 49.27 33.80 Azobenzene C12H10N2 67.1 28.91 Chloracetic acid (α-) C2H3ClO2 61.2 31.06 Azoxybenzene C12H10N2O 36 21.62 (β-) C2H3ClO2 56 35.12 Chloral alcoholate C4H7Cl3O2 9 24.03 Benzil C14H10O2 95.2 22.15 hydrate C2H3Cl3O2 47.4 33.18 Benzoic acid C7H8O2 122.45 33.90 Chloroaniline (p-) C6H6ClN 71 37.15 Benzophenone C13H10O 47.85 23.53 Chlorobenzoic acid (o-) C7H5ClO2 140.2 39.30 Benzylaniline C13H13N 32.37 21.86 (m-) C7H5ClO2 154.25 36.41 Bromocamphor C10H15BrO 78 41.57 (p-) C7H5ClO2 239.7 49.21 Bromochlorbenzene (o-) C6H4BrCl 12.6 15.41 Chloronitrobenzene (m-) C6H4ClNO2 44.4 29.38 (m-) C6H4BrCl 21.2 15.29 (p-) C6H4ClNO2 83.5 31.51 (p-) C6H4BrCl 64.6 23.41 Cinnamic acid C9H8O2 133 36.50 Bromoiodobenzene (o-) C6H4BrI 21 12.18 anhydride C18H14O3 48 28.14 (m-) C6H4BrI 9.3 10.27 Cresol (p-) C7H8O 34.6 26.28 (p-) C6H4BrI 90.1 16.60 Crotonic acid (α-) C4H6O2 72 25.32 Bromol hydrate C2H3Br3O2 46 16.90 (cis-) C4H6O2 71.2 34.90 Bromophenol (p-) C6H5BrO 63.5 20.50 Cyanamide CH2N2 44 49.81 Bromotoluene (p-) C7H7Br 28 20.86 Cyclohexanol C6H12O 25.46 4.19
LATENT HEATS 2-155 TABLE 2-192 Heats of Fusion of Organic Compounds (Concluded) Heat of fusion, Heat of fusion, Nonhydrocarbon compounds Formula mp, C cal/g Nonhydrocarbon compounds Formula mp, C cal/g Dibromobenzene (o-) C 6H 4Br 2 1.8 12.78 Naphthol (α-) C 10H 8O 95.0 38.94 (m-) C 6H 4Br 2 6.9 13.38 (β-) C 10H 8O 120.6 31.30 (p-) C 6H 4Br 2 86 20.55 Naphthylamine (α-) C 10H 9N 50 22.34 Dibromophenol (2, 4-) C 6H 4Br 2O 12 13.97 Nitroaniline (o-) C 6H 6N 2O 2 71.2 27.88 Dichloroacetic acid C 2H 2Cl 2O 2 4(?) 14.21 (m-) C 6H 6N 2O 2 114.0 40.97 Dichlorobenzene (o-) C 6H 4Cl 2 16.7 21.02 (p-) C 6H 6N 2O 2 147.3 36.46 (m-) C 6H 4Cl 2 24.8 20.55 Nitrobenzene C 6H 5NO 2 5.85 22.52 (p-) C 6H 4Cl 2 53.13 29.67 Nitrobenzoic acid (o-) C 7H 5NO 4 145.8 40.06 Dihydroxybenzene (o-) C 6H 6O 2 104.3 49.40 (m-) C 7H 5NO 4 141.1 27.59 (m-) C 6H 6O 2 109.65 46.20 (p-) C 7H 5NO 4 239.2 52.80 (p-) C 6H 6O 2 172.3 58.77 Nitronaphthalene C 10H 7NO 2 56.7 25.44 Di-iodobenzene (o-) C 6H 4I 2 23.4 10.15 Nitrophenol (o-) C 6H 5NO 3 45.13 26.76 (m-) C 6H 4I 2 34.2 11.54 (p-) C 6H 4I 2 129 16.20 Palmitic acid C 16H 32O 2 61.82 39.18 Dimethyl tartrate (dl-) C 6H 10O 6 87 35.12 Paraldehyde C 6H 12O 3 10.5 25.02 (d-) C 6H 10O 6 49 21.50 Pelargic acid (n-) (β-) C 9H 18O 2 39.04 pyrone C 7H 8O 2 132 56.14 Pelargonic acid (n-) (α-) C 9H 18O 2 12.35 30.63 Dinitrobenzene (o-) C 6H 4N 2O 4 116.93 32.25 Phenol C 6H 6O 40.92 29.03 (m-) C 6H 4N 2O 4 89.7 24.70 Phenylacetic acid C 8H 8O 2 76.7 25.44 (p-) C 6H 4N 2O 4 173.5 39.99 Phenylhydrazine C 6H 8N 2 19.6 36.31 Dinitrotoluene (2, 4-) C 7H 6N 2O 4 70.14 26.40 Propyl ether (n) C 6H 14O 126.1 20.66 Dioxane C 4H 8O 2 11.0 34.85 Diphenyl amine C 12H 11N 52.98 25.23 Quinone C 6H 4O 2 115.7 40.85 Elaidic acid C 18H 34O 2 44.4 52.08 Stearic acid C 18H 30O 2 68.82 47.54 Ethyl acetate C 4H 8O 2 83.8 28.43 Succinic anhydride C 4H 4O 3 119 48.74 alcohol C 2H 6O 114.4 25.76 Succinonitrile C 4H 4N 2 54.5 11.71 Ethylene dibromide C 2H 4Br 2 10.012 13.52 Ethyl ether C 4H 10O 116.3 23.54 Tetrachloroxylene (o-) C 8H 6Cl 4 86 21.02 (p-) C 8H 6Cl 4 95 22.10 Formic acid CH 2O 2 8.40 58.89 Thiophene C 4H 4S 39.4 14.11 Thiosinamine C 4H 8N 2S 77 33.45 Glutaric acid C 6H 8O 4 97.5 37.39 Thymol C 10H 14O 51.5 27.47 Glycerol C 3H 8O 3 18.07 47.49 Toluic acid (o-) C 8H 8O 2 103.7 35.40 Glycol, ethylene C 2H 6O 2 11.5 43.26 (m-) C 8H 8O 2 108.75 27.59 (p-) C 8H 8O 2 179.6 39.90 Hydrazo benzene C 12H 12N 2 134 22.89 Toluidine (p-) C 7H 9N 43.3 39.90 Hydrocinnamic acid C 9H 10O 2 48 28.14 Tribromophenol (2, 4, 6-) C 6H 3Br 3O 93 13.38 Hydroxyacetanilide C 8H 9NO 2 91.3 33.59 Trichloroacetic acid C 2HCl 3O 2 57.5 8.60 Trinitroglycerol C 3H 5N 3O 9 12.3 23.02 Iodotoluene (p-) C 7H 7I 34 18.75 Trinitrotoluene (2, 4, 6-) C 7H 5N 3O 6 80.83 22.34 Isopropyl alcohol C 3H 8O 88.5 21.08 Tristearin C 57H 110O 6 70.8, 54.5 45.63 ether C 6H 14O 86.8 25.79 Undecylic acid (α-) (n-) C 11H 22O 2 28.25 32.20 Lauric acid (n-) C 12H 24O 2 43.22 43.72 (β-) (n-) C 11H 22O 2 42.91 Levulinic acid C 5H 8O 3 33 18.97 Urethane C 3H 7NO 2 48.7 40.85 Menthol (l-) (α) C 10H 20O 43.5 18.63 Veratrol C 8H 10O 2 22.5 27.45 Methyl alcohol CH 4O 97.8 23.7 Myristic acid C 14H 28O 2 53.86 47.49 Xylene dibromide (o-) C 8H 8Br 2 95 24.25 Methyl cinnamate C 10H 10O 2 36 26.53 (m-) C 8H 8Br 2 77 21.45 fumarate C 6H 8O 4 102 57.93 dichloride (o-) C 8H 8Cl 2 55 29.03 oxalate C 4H 6O 4 54.35 42.64 (m-) C 8H 8Cl 2 34 26.64 phenylpropiolate C 10H 8O 2 18 22.86 (p-) C 8H 8Cl 2 100 32.73 succinate C 6H 10O 4 19.5 35.72
TABLE 2-193 Heats of Vaporization of Inorganic and Organic Compounds Cmpd. C1 T min, H v at T max, H v no. Name Formula CAS no. Mol wt 1E 07 C2 C3 C4 K T min 1E 07 K at T max 1 Methane CH 4 74828 16.043 1.0194 0.26087 0.14694 0.22154 90.69 0.8724 190.56 0 2 Ethane C 2 H 6 74840 30.070 2.1091 0.60646 0.55492 0.32799 90.35 1.7879 305.32 0 3 Propane C 3 H 8 74986 44.097 2.9209 0.78237 0.77319 0.39246 85.47 2.4787 369.83 0 4 n-butane C 4 H 10 106978 58.123 3.6238 0.8337 0.82274 0.39613 134.86 2.8684 425.12 0 5 n-pentane C 5 H 12 109660 72.150 3.9109 0.38681 0 0 143.42 3.3968 469.7 0 6 n-hexane C 6 H 14 110543 86.177 4.4544 0.39002 0 0 177.83 3.7647 507.6 0 7 n-heptane C 7 H 16 142825 100.204 5.0014 0.38795 0 0 182.57 4.2619 540.2 0 8 n-octane C 8 H 18 111659 114.231 5.5180 0.38467 0 0 216.38 4.5898 568.7 0 9 n-nonane C 9 H 20 111842 128.258 6.0370 0.38522 0 0 219.66 5.0545 594.6 0 10 n-decane C 10 H 22 124185 142.285 6.6126 0.39797 0 0 243.51 5.4168 617.7 0 11 n-undecane C 11 H 24 1120214 156.312 7.2284 0.40607 0 0 247.57 5.9240 639 0 12 n-dodecane C 12 H 26 112403 170.338 7.7337 0.40681 0 0 263.57 6.2802 658 0 13 n-tridecane C 13 H 28 629505 184.365 8.4339 0.4257 0 0 267.76 6.8015 675 0 14 n-tetradecane C 14 H 30 629594 198.392 9.0539 0.44467 0 0 279.01 7.2002 693 0 15 n-pentadecane C 15 H 32 629629 212.419 9.6741 0.45399 0 0 283.07 7.6728 708 0 16 n-hexadecane C 16 H 34 544763 226.446 10.1560 0.45726 0 0 291.31 8.0225 723 0 17 n-heptadecane C 17 H 36 629787 240.473 10.4730 0.4374 0 0 295.13 8.3699 736 0 18 n-octadecane C 18 H 38 593453 254.500 10.9690 0.44327 0 0 301.31 8.7246 747 0 19 n-nonadecane C 19 H 40 629925 268.527 11.6740 0.45865 0 0 305.04 9.2185 758 0 20 n-eicosane C 20 H 42 112958 282.553 12.8600 0.50351 0.32986 0.42184 309.58 9.5933 768 0 21 2-Methylpropane C 4 H 10 75285 58.123 3.1667 0.3855 0 0 113.54 2.7927 408.14 0 22 2-Methylbutane C 5 H 12 78784 72.150 3.7700 0.3952 0 0 113.25 3.3720 460.43 0 23 2,3-Dimethylbutane C 6 H 14 79298 86.177 4.1404 0.38124 0 0 145.19 3.6328 499.98 0 24 2-Methylpentane C 6 H 14 107835 86.177 4.2780 0.384 0 0 119.55 3.8495 497.5 0 25 2,3-Dimethylpentane C 7 H 16 565593 100.204 4.6536 0.37579 0 0 160 4.0747 537.35 0 26 2,3,3-Trimethylpentane C 8 H 18 560214 114.231 4.9910 0.383 0 0 172.22 4.3530 573.5 0 27 2,2,4-Trimethylpentane C 8 H 18 540841 114.231 4.7721 0.37992 0 0 165.78 4.1565 543.96 0 28 Ethylene C 2 H 4 74851 28.054 0.3746 0 0 104 1.6025 282.34 0 29 Propylene C 3 H 6 115071 42.081 2.8694 0.8375 0.9216 0.5012 87.89 2.4031 365.57 0 30 1-Butene C 4 H 8 106989 56.108 3.2300 0.3747 0 0 87.8 2.9582 419.95 0 31 cis-2-butene C 4 H 8 590181 56.108 3.4190 0.3754 0 0 134.26 2.9773 435.58 0 32 trans-2-butene C 4 H 8 624646 56.108 3.3320 0.3736 0 0 167.62 2.7684 428.63 0 33 1-Pentene C 5 H 10 109671 70.134 3.7740 0.37647 0 0 107.93 3.4166 464.78 0 34 1-Hexene C 6 H 12 592416 84.161 4.3236 0.3788 0 0 133.39 3.8483 504.03 0 35 1-Heptene C 7 H 14 592767 98.188 4.8120 0.3685 0 0 154.27 4.2478 537.29 0 36 1-Octene C 8 H 16 111660 112.215 5.3980 0.3835 0 0 171.45 4.7013 566.65 0 37 1-Nonene C 9 H 18 124118 126.242 5.9940 0.3953 0 0 191.78 5.1366 593.25 0 38 1-Decene C 10 H 20 872059 140.269 6.4898 0.39187 0 0 206.89 5.5289 616.4 0 39 2-Methylpropene C 4 H 8 115117 56.108 3.2720 0.383 0 0 132.81 2.8262 417.9 0 40 2-Methyl-1-butene C 5 H 10 563462 70.134 3.9091 0.39866 0 0 135.58 3.4072 465 0 41 2-Methyl-2-butene C 5 H 10 513359 70.134 3.9121 0.3634 0 0 139.39 3.4437 471 0 42 1,2-Butadiene C 4 H 6 590192 54.092 3.5220 0.395 0 0 136.95 3.0540 452 0 43 1,3-Butadiene C 4 H 6 106990 54.092 3.2580 0.373 0 0 164.25 2.7155 425.17 0 44 2-Methyl-1,3-butadiene C 5 H 8 78795 68.119 3.9310 0.425 0 0 127.27 3.4529 484 0 45 Acetylene C 2 H 2 74862 26.038 2.3795 0.375 0 0 192.4 1.6488 308.32 0 46 Methylacetylene C 3 H 4 74997 40.065 3.2775 0.3997 0 0 170.45 2.6297 402.39 0 47 Dimethylacetylene C 4 H 6 503173 54.092 3.8560 0.3737 0 0 240.91 2.9557 473.2 0 48 3-Methyl-1-butyne C 5 H 8 598232 68.119 3.7920 0.3565 0 0 183.45 3.1681 463.2 0 49 1-Pentyne C 5 H 8 627190 68.119 3.9540 0.3512 0 0 167.45 3.4025 481.2 0 50 2-Pentyne C 5 H 8 627214 68.119 4.4158 0.44347 0 0 163.83 3.7321 519 0 51 1-Hexyne C 6 H 10 693027 82.145 4.5740 0.3698 0 0 141.25 4.0640 516.2 0 52 2-Hexyne C 6 H 10 764352 82.145 4.9110 0.4392 0 0 183.65 4.1067 549 0 2-156
53 3-Hexyne C 6 H 10 928494 82.145 4.8080 0.436 0 0 170.05 4.0831 544 0 54 1-Heptyne C 7 H 12 628717 96.172 5.0514 0.41163 0 0 192.22 4.2470 559 0 55 1-Octyne C 8 H 14 629050 110.199 5.6306 0.4148 0 0 193.55 4.7663 585 0 56 Vinylacetylene 1 C 4 H 4 689974 52.076 3.6490 0.4 0.043 0 173.15 2.9876 454 0 57 Cyclopentane C 5 H 10 287923 70.134 3.8900 0.361 0 0 179.28 3.3292 511.76 0 58 Methylcyclopentane C 6 H 12 96377 84.161 4.3600 0.38531 0 0 130.73 3.9118 532.79 0 59 Ethylcyclopentane C 7 H 14 1640897 98.188 4.8288 0.37809 0 0 134.71 4.3604 569.52 0 60 Cyclohexane C 6 H 12 110827 84.161 4.4940 0.3974 0 0 279.69 3.3977 553.58 0 61 Methylcyclohexane C 7 H 14 108872 98.188 4.7534 0.39461 0 0 146.58 4.2295 572.19 0 62 1,1-Dimethylcyclohexane C 8 H 16 590669 112.215 5.0402 0.4036 0 0 239.66 4.0862 591.15 0 63 Ethylcyclohexane C 8 H 16 1678917 112.215 5.3832 0.41763 0 0 161.84 4.7318 609.15 0 64 Cyclopentene C 5 H 8 142290 68.119 3.8107 0.3543 0 0 138.13 3.4046 507 0 65 1-Methylcyclopentene C 6 H 10 693890 82.145 4.3541 0.36805 0 0 146.62 3.8769 542 0 66 Cyclohexene C 6 H 10 110838 82.145 4.4405 0.37479 0 0 169.67 3.8791 560.4 0 67 Benzene C 6 H 6 71432 78.114 4.7500 0.45238 0.0534 0.1181 278.68 3.4909 562.16 0 68 Toluene C 7 H 8 108883 92.141 5.0144 0.3859 0 0 178.18 4.3670 591.8 0 69 o-xylene C 8 H 10 95476 106.167 5.5330 0.377 0 0 247.98 4.5826 630.33 0 70 m-xylene C 8 H 10 108383 106.167 5.4600 0.3726 0 0 225.3 4.6097 617.05 0 71 p-xylene C 8 H 10 106423 106.167 5.3740 0.3656 0 0 286.41 4.2761 616.23 0 72 Ethylbenzene C 8 H 10 100414 106.167 5.4640 0.392 0 0 178.15 4.7811 617.2 0 73 Propylbenzene C 9 H 12 103651 120.194 5.7663 0.3956 8.9129E 03 0 215.03 5.0574 574.54 2.4695E+07 74 1,2,4-Trimethylbenzene C 9 H 12 95636 120.194 5.9126 0.35632 0 0 229.33 5.0621 649.13 0 75 Isopropylbenzene C 9 H 12 98828 120.194 5.7950 0.3956 0 0 177.14 5.0869 631.1 0 76 1,3,5-Trimethylbenzene C 9 H 12 108678 120.194 6.0380 0.37999 0 0 228.42 5.1010 637.36 0 77 p-isopropyltoluene C 10 H 14 99876 134.221 6.3314 0.40289 0 0 205.25 5.4387 653.15 0 78 Naphthalene C 10 H 8 91203 128.174 7.0510 0.4612 0 0 353.43 5.2508 748.35 0 79 Biphenyl C 12 H 10 92524 154.211 7.5736 0.3975 0 0 342.2 6.0420 789.26 0 80 Styrene C 8 H 8 100425 104.152 5.7260 0.4055 0 0 242.54 4.7128 636 0 81 m-terphenyl C 18 H 14 92068 230.309 10.1230 0.3767 0 0 360 8.4070 924.85 0 82 Methanol CH 4 O 67561 32.042 5.2390 0.3682 0 0 175.47 4.4900 512.64 0 83 Ethanol C 2 H 6 O 64175 46.069 5.6900 0.3359 0 0 159.05 5.0245 513.92 0 84 1-Propanol C 3 H 8 O 71238 60.096 6.3300 0.3575 0 0 146.95 5.6460 536.78 0 85 1-Butanol C 4 H 10 O 71363 74.123 6.7390 0.173 0.2915 0 184.51 6.0575 563.05 0 86 2-Butanol C 4 H 10 O 78922 74.123 7.2560 0.4774 0 0 158.45 6.1383 536.05 0 87 2-Propanol C 3 H 8 O 67630 60.096 6.3080 0.3921 0 0 185.28 5.2807 508.3 0 88 2-Methyl-2-propanol C 4 H 10 O 75650 74.123 7.7320 0.5645 0 0 298.97 4.6703 506.21 0 89 1-Pentanol C 5 H 12 O 71410 88.150 8.3100 0.511 0 0 195.56 6.7533 586.15 0 90 2-Methyl-1-butanol C 5 H 12 O 137326 88.150 7.7839 0.45313 0 0 203 6.3619 565 0 91 3-Methyl-1-butanol C 5 H 12 O 123513 88.150 8.0815 0.50185 0 0 155.95 6.8999 577.2 0 92 1-Hexanol C 6 H 14 O 111273 102.177 8.5980 0.513 0 0 228.55 6.7623 611.35 0 93 1-Heptanol C 7 H 16 O 111706 116.203 9.6900 0.572 0 0 239.15 7.3822 631.9 0 94 Cyclohexanol C 6 H 12 O 108930 100.161 9.2440 0.64825 0 0 296.6 6.2273 650 0 95 Ethylene glycol C 2 H 6 O 2 107211 62.068 8.2900 0.4266 0 0 260.15 6.8461 719.7 0 96 1,2-Propylene glycol C 3 H 8 O 2 57556 76.095 8.0700 0.295 0 0 213.15 7.1374 626 0 97 Phenol C 6 H 6 O 108952 94.113 7.3060 0.4246 0 0 314.06 5.6577 694.25 0 98 o-cresol C 7 H 8 O 95487 108.140 7.1979 0.40317 0 0 304.19 5.7135 697.55 0 99 m-cresol C 7 H 8 O 108394 108.140 8.0082 0.45314 0 0 285.39 6.3326 705.85 0 100 p-cresol C 7 H 8 O 106445 108.140 8.4942 0.50234 0 0 307.93 6.3649 704.65 0 101 Dimethyl ether C 2 H 6 O 115106 46.069 2.9940 0.3505 0 0 131.65 2.6032 400.1 0 102 Methyl ethyl ether C 3 H 8 O 540670 60.096 3.5300 0.376 0 0 160 2.9751 437.8 0 103 Methyl n-propyl ether C 4 H 10 O 557175 74.123 3.9795 0.3729 0 0 133.97 3.5184 476.3 0 104 Methyl isopropyl ether C 4 H 10 O 598538 74.123 3.9305 0.3711 0 0 127.93 3.4876 464.5 0 105 Methyl-n-butyl ether C 5 H 12 O 628284 88.150 4.5328 0.3824 0 0 157.48 3.9358 510 0 106 Methyl isobutyl ether C 5 H 12 O 625445 88.150 4.2678 0.37995 0 0 150 3.7232 497 0 107 Methyl tert-butyl ether C 5 H 12 O 1634044 88.150 4.2024 0.37826 0 0 164.55 3.6096 497.1 0 2-157
TABLE 2-193 Heats of Vaporization of Inorganic and Organic Compounds (Continued) Cmpd. C1 T min, H v at T max, H v no. Name Formula CAS no. Mol wt 1E 07 C2 C3 C4 K T min 1E 07 K at T max 108 Diethyl ether C 4 H 10 O 60297 74.123 4.0600 0.3868 0 0 156.85 3.4651 466.7 0 109 Ethyl propyl ether C 5 H 12 O 628320 88.150 5.4380 0.60624 0 0 145.65 4.4140 500.23 0 110 Ethyl isopropyl ether C 5 H 12 O 625547 88.150 4.2580 0.37221 0 0 140 3.7556 489 0 111 Methyl phenyl ether C 7 H 8 O 100663 108.140 5.8662 0.37127 0 0 235.65 4.9560 645.6 0 112 Diphenyl ether C 12 H 10 O 101848 170.211 6.8243 0.30877 0 0 300.03 5.8546 766.8 0 113 Formaldehyde CH 2 O 50000 30.026 3.0760 0.2954 0 0 181.15 2.5863 408 0 114 Acetaldehyde C 2 H 4 O 75070 44.053 4.6070 0.62 0 0 150.15 3.6199 466 0 115 1-Propanal C 3 H 6 O 123386 58.080 4.1492 0.36751 0 0 170 3.5675 504.4 0 116 1-Butanal C 4 H 8 O 123728 72.107 4.6403 0.3849 0 0 176.75 3.9797 537.2 0 117 1-Pentanal C 5 H 10 O 110623 86.134 5.1478 0.37541 0 0 182 4.4502 566.1 0 118 1-Hexanal C 6 H 12 O 66251 100.161 5.6661 0.38533 0 0 217.15 4.7495 591 0 119 1-Heptanal C 7 H 14 O 111717 114.188 6.1299 0.37999 0 0 229.8 5.1353 617 0 120 1-Octanal C 8 H 16 O 124130 128.214 6.8347 0.41039 0 0 246 5.5966 638.1 0 121 1-Nonanal C 9 H 18 O 124196 142.241 7.3363 0.41735 0 0 255.15 5.9779 658 0 122 1-Decanal C 10 H 20 O 112312 156.268 7.9073 0.4129 0 0 267.15 6.4201 674.2 0 123 Acetone C 3 H 6 O 67641 58.080 4.2150 0.3397 0 0 178.45 3.6390 508.2 0 124 Methyl ethyl ketone C 4 H 8 O 78933 72.107 4.6220 0.355 0 0 186.48 3.9704 535.5 0 125 2-Pentanone C 5 H 10 O 107879 86.134 5.1740 0.39422 0 0 196.29 4.3663 561.08 0 126 Methyl isopropyl ketone C 5 H 10 O 563804 86.134 5.1400 0.3858 0 0 250 4.0753 553 0 127 2-Hexanone C 6 H 12 O 591786 100.161 5.6770 0.3817 0 0 217.35 4.7584 587.05 0 128 Methyl isobutyl ketone C 6 H 12 O 108101 100.161 5.4000 0.383 0 0 189.15 4.6294 571.4 0 129 3-Methyl-2-pentanone C 6 H 12 O 565617 100.161 5.1130 0.3395 0 0 167.15 4.5480 573 0 130 3-Pentanone C 5 H 10 O 96220 86.134 5.2359 0.40465 0 0 234.18 4.2075 560.95 0 131 Ethyl isopropyl ketone C 6 H 12 O 565695 100.161 5.3880 0.40616 0 0 200 4.5154 567 0 132 Diisopropyl ketone C 7 H 14 O 565800 114.188 5.5980 0.3774 0 0 204.81 4.7426 576 0 133 Cyclohexanone C 6 H 10 O 108941 98.145 5.5500 0.3538 0 0 242 4.7114 653 0 134 Methyl phenyl ketone C 8 H 8 O 98862 120.151 6.6104 0.37425 0 0 292.81 5.4166 709.5 0 135 Formic acid CH 2 O 2 64186 46.026 2.3700 1.999 5.1503 3.331 281.45 1.9532 588 0 136 Acetic acid C 2 H 4 O 2 64197 60.053 2.0265 0.11911 1.3487 1.4227 289.81 2.3185 591.95 0 137 Propionic acid C 3 H 6 O 2 79094 74.079 2.7290 0.06954 1.0423 1.1152 252.45 2.9964 600.81 0 138 n-butyric acid C 4 H 8 O 2 107926 88.106 7.4996 2.333 3.8644 2.016 267.95 4.1566 615.7 0 139 Isobutyric acid C 4 H 8 O 2 79312 88.106 4.4967 1.1615 2.4573 1.5823 227.15 3.6179 605 0 140 Benzoic acid 2 C 7 H 6 O 2 65850 122.123 10.1900 0.478 0 0 395.45 7.1277 751 0 141 Acetic anhydride C 4 H 6 O 3 108247 102.090 6.3520 0.3986 0 0 200.15 5.4139 606 0 142 Methyl formate C 2 H 4 O 2 107313 60.053 4.1030 0.3825 0 0 174.15 3.4644 487.2 0 143 Methyl acetate C 3 H 6 O 2 79209 74.079 4.4920 0.3685 0 0 175.15 3.8418 506.55 0 144 Methyl propionate C 4 H 8 O 2 554121 88.106 5.0080 0.3959 0 0 185.65 4.2231 530.6 0 145 Methyl n-butyrate C 5 H 10 O 2 623427 102.133 5.3781 0.39523 0 0 187.35 4.5694 554.5 0 146 Ethyl formate C 3 H 6 O 2 109944 74.079 4.5909 0.4123 0 0 193.55 3.7679 508.4 0 147 Ethyl acetate C 4 H 8 O 2 141786 88.106 4.9330 0.3847 0 0 189.6 4.1490 523.3 0 148 Ethyl propionate C 5 H 10 O 2 105373 102.133 5.3325 0.401 0 0 199.25 4.4449 546 0 149 Ethyl n-butyrate C 6 H 12 O 2 105544 116.160 5.6419 0.37985 0 0 175.15 4.9090 571 0 150 n-propyl formate C 4 H 8 O 2 110747 88.106 4.9687 0.4025 0 0 180.25 4.2162 538 0 151 n-propyl acetate C 5 H 10 O 2 109604 102.133 5.4327 0.407 0 0 178.15 4.6322 549.73 0 152 n-butyl acetate C 6 H 12 O 2 123864 116.160 5.7800 0.3935 0 0 199.65 4.8943 579.15 0 153 Methyl benzoate C 8 H 8 O 2 93583 136.150 6.9650 0.4061 0 0 260.75 5.7500 693 0 154 Ethyl benzoate C 9 H 10 O 2 93890 150.177 6.3400 0.2911 0 0 238.45 5.6137 698 0 155 Vinyl acetate C 4 H 6 O 2 108054 86.090 4.7700 0.3765 0 0 180.35 4.0619 519.13 0 156 Methylamine CH 5 N 74895 31.057 3.8580 0.404 0 0 179.69 3.1006 430.05 0 157 Dimethylamine C 2 H 7 N 124403 45.084 4.0900 0.42005 0 0 180.96 3.2678 437.2 0 158 Trimethylamine C 3 H 9 N 75503 59.111 3.3050 0.354 0 0 156.08 2.8216 433.25 0 2-158
159 Ethylamine C 2 H 7 N 75047 45.084 4.2750 0.5857 0.332 0.169 192.15 3.2955 456.15 0 160 Diethylamine C 4 H 11 N 109897 73.138 4.6133 0.42628 0 0 223.35 3.5761 496.6 0 161 Triethylamine C 6 H 15 N 121448 101.192 4.6640 0.3663 0 0 158.45 4.1011 535.15 0 162 n-propylamine C 3 H 9 N 107108 59.111 4.4488 0.39494 0 0 188.36 3.6857 496.95 0 163 di-n-propylamine C 6 H 15 N 142847 101.192 5.4280 0.3665 0 0 210.15 4.5500 550 0 164 Isopropylamine C 3 H 9 N 75310 59.111 4.4041 0.43325 0 0 177.95 3.5874 471.85 0 165 Diisopropylamine C 6 H 15 N 108189 101.192 5.0070 0.4362 0 0 176.85 4.1823 523.1 0 166 Aniline C 6 H 7 N 62533 93.128 7.1950 0.458 0 0 267.13 5.7710 699 0 167 N-Methylaniline C 7 H 9 N 100618 107.155 6.3860 0.3104 0 0 216.15 5.6961 701.55 0 168 N,N-Dimethylaniline C 8 H 11 N 121697 121.182 6.7900 0.4053 0 0 275.6 5.5162 687.15 0 169 Ethylene oxide C 2 H 4 O 75218 44.053 3.6652 0.37878 0 0 160.65 3.1271 469.15 0 170 Furan C 4 H 4 O 110009 68.075 4.0050 0.3995 0 0 196.29 3.2647 490.15 0 171 Thiophene C 4 H 4 S 110021 84.142 4.5793 0.38557 0 0 234.94 3.7472 579.35 0 172 Pyridine C 5 H 5 N 110861 79.101 5.1740 0.38865 0 0 231.51 4.3144 619.95 0 173 Formamide 3 CH 3 NO 75127 45.041 7.3580 0.3564 0 0 275.7 6.2844 771 0 174 N,N-Dimethylformamide C 3 H 7 NO 68122 73.095 5.9217 0.37996 0 0 212.72 5.0931 649.6 0 175 Acetamide C 2 H 5 NO 60355 59.068 8.1070 0.42 0 0 353.15 6.2386 761 0 176 N-Methylacetamide C 3 H 7 NO 79163 73.095 7.3402 0.38974 0 0 301.15 5.9384 718 0 177 Acetonitrile C 2 H 3 N 75058 41.053 4.3511 0.34765 0 0 229.32 3.5996 545.5 0 178 Propionitrile C 3 H 5 N 107120 55.079 4.9348 0.41873 0 0 180.26 4.2005 564.4 0 179 n-butyronitrile C 4 H 7 N 109740 69.106 5.2200 0.165 0.6692 0.539 161.25 4.7223 582.25 0 180 Benzonitrile C 7 H 5 N 100470 103.123 6.2615 0.35427 0 0 260.4 5.3091 699.35 0 181 Methyl mercaptan CH 4 S 74931 48.109 3.4448 0.37427 0 0 150.18 2.9825 469.95 0 182 Ethyl mercaptan C 2 H 6 S 75081 62.136 3.8440 0.37534 0 0 125.26 3.4489 499.15 0 183 n-propyl mercaptan C 3 H 8 S 107039 76.163 4.4782 0.41073 0 0 159.95 3.8723 536.6 0 184 n-butyl mercaptan C 4 H 10 S 109795 90.189 4.9702 0.41199 0 0 157.46 4.3505 570.1 0 185 Isobutyl mercaptan C 4 H 10 S 513440 90.189 4.7420 0.40535 0 0 128.31 4.2664 559 0 186 sec-butyl mercaptan C 4 H 10 S 513531 90.189 4.6432 0.399 0 0 133.02 4.1614 554 0 187 Dimethyl sulfide C 2 H 6 S 75183 62.136 3.8690 0.3694 0 0 174.88 3.3042 503.04 0 188 Methyl ethyl sulfide C 3 H 8 S 624895 76.163 4.4740 0.4097 0 0 167.23 3.8344 533 0 189 Diethyl sulfide C 4 H 10 S 352932 90.189 4.7182 0.3643 0 0 169.2 4.1353 557.15 0 190 Fluoromethane CH 3 F 593533 34.033 2.4708 0.37014 0 0 131.35 2.0276 317.42 0 191 Chloromethane CH 3 Cl 74873 50.488 2.9745 0.353 0 0 175.43 2.4520 416.25 0 192 Trichloromethane CHCl 3 67663 119.377 4.1860 0.3584 0 0 209.63 3.5047 536.4 0 193 Tetrachloromethane CCl 4 56235 153.822 4.3252 0.37688 0 0 250.33 3.4528 556.35 0 194 Bromomethane CH 3 Br 74839 94.939 3.1690 0.3015 0 0 179.47 2.7379 467 0 195 Fluoroethane C 2 H 5 F 353366 48.060 2.7617 0.32162 0 0 129.95 2.4089 375.31 0 196 Chloroethane C 2 H 5 Cl 75003 64.514 3.5240 0.3652 0 0 134.8 3.1052 460.35 0 197 Bromoethane C 2 H 5 Br 74964 108.966 3.9004 0.38012 0 0 154.55 3.3933 503.8 0 198 1-Chloropropane C 3 H 7 Cl 540545 78.541 3.9890 0.37956 0 0 150.35 3.4862 503.15 0 199 2-Chloropropane C 3 H 7 Cl 75296 78.541 3.8871 0.38043 0 0 155.97 3.3586 489 0 200 1,1-Dichloropropane C 3 H 6 Cl 2 78999 112.986 4.7740 0.39204 0 0 200 4.0147 560 0 201 1,2-Dichloropropane C 3 H 6 Cl 2 78875 112.986 4.6750 0.36529 0 0 172.71 4.0997 572 0 202 Vinyl chloride C 2 H 3 Cl 75014 62.499 3.4125 0.4513 0 0 119.36 2.9491 432 0 203 Fluorobenzene C 6 H 5 F 462066 96.104 4.5820 0.3717 0 0 230.94 3.7605 560.09 0 204 Chlorobenzene C 6 H 5 Cl 108907 112.558 5.1480 0.36614 0 0 227.95 4.3707 632.35 0 205 Bromobenzene C 6 H 5 Br 108861 157.010 5.5520 0.37694 0 0 242.43 4.6875 670.15 0 206 Air 132259100 28.951 0.8474 0.3822 0 0 59.15 0.6759 132.45 0 207 Hydrogen H 2 1333740 2.016 0.1013 0.698 1.817 1.447 13.95 0.0913 33.19 0 208 Helium-4 He 7440597 4.003 0.0125 1.3038 2.6954 1.7098 2.2 0.0097 5.2 0 209 Neon Ne 7440019 20.180 0.2389 0.3494 0 0 24.56 0.1803 44.4 0 210 Argon Ar 7440371 39.948 0.8731 0.3526 0 0 83.78 0.6561 150.86 0 211 Fluorine F 2 7782414 37.997 0.8876 0.34072 0 0 53.48 0.7578 144.12 0 212 Chlorine Cl 2 7782505 70.905 3.0680 0.8458 0.9001 0.453 172.12 2.2878 417.15 0 213 Bromine Br 2 7726956 159.808 4.0000 0.351 0 0 265.85 3.2323 584.15 0 2-159
TABLE 2-193 Heats of Vaporization of Inorganic and Organic Compounds (Concluded) Cmpd. C1 T min, H v at T max, H v no. Name Formula CAS no. Mol wt 1E 07 C2 C3 C4 K T min 1E 07 K at T max 214 Oxygen O 2 7782447 31.999 0.9008 0.4542 0.4096 0.3183 54.36 0.7742 154.58 0 215 Nitrogen N 2 7727379 28.014 0.7491 0.40406 0.317 0.27343 63.15 0.6024 126.2 0 216 Ammonia NH 3 7664417 17.031 3.1523 0.3914 0.2289 0.2309 195.41 2.5298 405.65 0 217 Hydrazine N 2 H 4 302012 32.045 5.9794 0.9424 1.398 0.8862 274.69 4.5238 653.15 0 218 Nitrous oxide N 2 O 10024972 44.013 2.3215 0.384 0 0 182.3 1.6502 309.57 0 219 Nitric oxide NO 10102439 30.006 2.1310 0.4056 0 0 109.5 1.4578 180.15 0 220 Cyanogen C 2 N 2 460195 52.036 3.3840 0.3707 0 0 245.25 2.3803 400.15 0 221 Carbon monoxide CO 630080 28.010 0.8585 0.4921 0.326 0.2231 68.13 0.6517 132.5 915280 222 Carbon dioxide CO 2 124389 44.010 2.1730 0.382 0.4339 0.42213 216.58 1.5202 304.21 0 223 Carbon disulfide CS 2 75150 76.143 3.4960 0.2986 0 0 161.11 3.1537 552 0 224 Hydrogen fluoride HF 7664393 20.006 13.4510 13.36 23.383 10.785 277.56 0.7104 461.15 0 225 Hydrogen chloride HCl 7647010 36.461 2.2093 0.3466 0 0 158.97 1.7498 324.65 0 226 Hydrogen bromide HBr 10035106 80.912 2.4850 0.39 0 0 185.15 1.8817 363.15 0 227 Hydrogen cyanide 2 HCN 74908 27.026 3.3490 0.2053 0 0 259.83 2.8176 456.65 0 228 Hydrogen sulfide H 2 S 7783064 34.082 2.5676 0.37358 0 0 187.68 1.9782 373.53 0 229 Sulfur dioxide SO 2 7446095 64.065 3.6760 0.4 0 0 197.67 2.8753 430.75 0 230 Sulfur trioxide SO 3 7446119 80.064 7.3370 0.5647 0 0 289.95 4.4303 490.85 0 231 Water H 2 O 7732185 18.015 5.2053 0.3199 0.212 0.25795 273.16 4.4733 647.13 0 All substances are listed in alphabetical order in Table 2-6a. Compiled from Daubert, T. E., R. P. Danner, H. M. Sibul, and C. C. Stebbins, DIPPR Data Compilation of Pure Compound Properties, Project 801 Sponsor Release, July, 1993, Design Institute for Physical Property Data, AIChE, New York, NY; and from Thermodynamics Research Center, Selected Values of Properties of Hydrocarbons and Related Compounds, Thermodynamics Research Center Hydrocarbon Project, Texas A&M University, College Station, Texas (extant 1994). Temperatures are expressed in kelvins; heats of vaporization, in J/kmol. J/kmol 2.390E 04 = cal/gmol; J/kmol 4.302106E 04 = Btu/lbmol. The heat of vaporization equation used is H v = C1 (1 T r ) C2 + C3 Tr + C4 Tr Tr. T r is the reduced temperature, T/T c. 1 Coefficients are hypothetical; compound decomposes violently on heating. 2 For the monomer. 3 Equation coefficients are hypothetical above the decomposition temperature. 2-160
SPECIFIC HEATS OF PURE COMPOUNDS SPECIFIC HEATS OF PURE COMPOUNDS 2-161 UNITS CONVERSIONS For this subsection, the following units conversions are applicable: F = 9 5 C + 32 F = 1.8 K To convert calories per gram-kelvin to British thermal units per pound-degree Rankine, multiply by 1.0; to convert calories per grammole-kelvin to British thermal units per pound-mole-degree Rankine, multiply by 1.0. To convert kilojoules per kilogram-kelvin to British thermal units per pound-degree Rankine, multiply by 0.2388. ADDITIONAL REFERENCES Additional data are contained in the subsection Thermodynamic Properties. Data on water are also contained in that subsection. Additional tables for water are found in Eng. Sci. Data Item 68008, 251 Regent Street, London, England, which contains about 5000 values from 1 to 1000 bar, 0 to 1500 C. TABLE 2-194 Heat Capacities of the Elements and Inorganic Compounds* Heat capacity at constant pressure Range of (T = K; 0 C = 273.1 K), temperature, Uncertainty, Substance State cal/deg mol K % Aluminum 1 Al c 4.80 + 0.00322T 273 931 1 l 7.00 931 1273 5 AlBr 3 c 18.74 + 0.01866T 273 370 3 l 29.5 370 407 5 AlCl 3 c 13.25 + 0.02800T 273 465 3 l 31.2 465 504 3 AlCl 3 6H 2 O c 76 288 327? AlF 3 c 19.3 288 326? AlF 3 3aH 2 O c 50.5 288 326? AlF 3 3NaF c 38.63 + 0.04760T 449200/T 2 273 1273 2 l 142 1273 1373? AlI 3 c 16.88 + 0.02266T 273 464 3 l 28.8 464 480 5 Al 2 O 3 c 22.08 + 0.008971T 522500/T 2 273 1973 3 Al 2 O 3 SiO 2 c, sillimanite 40.79 + 0.004763T 992800/T 2 273 1573 3 c, disthene 41.81 + 0.005283T 1211000/T 2 273 1673 2 c, andalusite 43.96 + 0.001923T 1086000/T 2 273 1573 3 3Al 2 O 3 2SiO 2 c, mullite 59.65 + 0.0670T 273 576 5 4Al 2 O 3 3SiO 2 c 113.2 + 0.0652T 273 575 3 Al 2 (SO 4 ) 3 c 63.5 273 373? Al 2 (SO 4 ) 3 18H 2 O c 235 288 325? Antimony Sb c 5.51 + 0.00178T 273 903 2 l 7.15 903 1273 5 SbBr 3 c 17.2 + 0.0293T 273 370? SbCl 3 c 10.3 + 0.0511T 273 346? Sb 2 O 3 c 19.1 + 0.0171T 273 929? Sb 2 O 4 c 22.6 + 0.0162T 273 1198? Sb 2 S 3 c 24.2 + 0.0132T 273 821? Argon 2 A g 4.97 All 0 Arsenic As c 5.17 + 0.00234T 273 1168 5 AsCl 3 l 31.9 286 371? As 2 O 3 c 8.37 + 0.0486T 273 548? As 2 S 3 c 25.8 293 373? Barium BaCl 2 c 17.0 + 0.00334T 273 1198? BaCl 2 H 2 O c 28.2 273 307? BaCl 2 2H 2 O c 37.3 273 307? Ba(ClO 3 ) 2 H 2 O c 51 289 320? BaCO 3 c, α 17.26 + 0.0131T 273 1083 5 c, β 30.0 1083 1255 15 BaMoO 4 c 34 273 297? Ba(NO 3 ) 2 c 39.8 285 371? BaSO 4 c 21.35 + 0.0141T 273 1323 5 Beryllium 3,4 Be c 4.698 + 0.001555T 121000/T 2 273 1173 1 BeO c 8.69 + 0.00365T 313000/T 2 273 1175 5 BeO Al 2 O 3 c 25.4 273 373? BeSO 4 c 20.8 273 373? *From Kelley, U.S. Bur. Mines Bull. 371, 1934. For a revision see Kelley, U.S. Bur. Mines Bull. 477, 1948. Data for many elements and compounds are given by Johnson (ed.), WADD-TR-60-56, 1960, for cryogenic temperatures. Tabulated data for gases can be obtained from many of the references cited in the Thermodynamic Properties subsection and other tables in this section. Thinh, Duran, et al., Hydrocarbon Process., 50, 98 (January 1971), review previous equation fits and give newer fits for 408 hydrocarbons and related compounds. Later publications include Duran, Thinh, et al., Hydrocarbon Process., 55, 153 (August 1976); Thompson, J. Chem. Eng. Data, 22(4), 431 (1977); and Passut and Danner, Ind. Eng. Chem. Process Des. Dev., 11, 543 (1972); 13, 193 (1974). The symbols in this column have the following meaning; c, crystal; l, liquid; g, gas; gls, glass.
TABLE 2-194 Heat Capacities of the Elements and Inorganic Compounds (Continued) Heat capacity at constant pressure Range of (T = K; 0 C = 273.1 K), temperature, Uncertainty, Substance State cal/deg mol K % Bismuth 4 Bi c 5.38 + 0.00260T 273 544 3 l 7.60 544 1273 3 Bi 2 O 3 c 23.27 + 0.01105T 273 777 2 Bi 2 S 3 c 30.4 284 372? Boron B c 1.54 + 0.00440T 273 1174 5 B 2 O 3 gls 5.14 + 0.0320T 273 513 3 gls 30.4 513 623 3 BN c 1.61 + 0.00400T 273 1173 5 Bromine Br 2 g 9.00 300 2000 5 Cadmium Cd c 5.46 + 0.002466T 273 594 1 l 7.13 594 973 5 CdO c 9.65 + 0.00208T 273 2086? CdS c 12.9 + 0.00090T 273 1273? CdSO 4 8/3H 2 O c 51.3 293? Calcium Ca c 5.31 + 0.00333T 273 673 2 c 6.29 + 0.00140T 673 873 2 CaCl 2 c 16.9 + 0.00386T 273 1055? CaCO 3 c 19.68 + 0.01189T 307600/T 2 273 1033 3 CaF 2 c 14.7 + 0.00380T 273 1651? CaMg(CO 3 ) 2 c 40.1 299 372? CaMoO 4 c 33 273 297? CaO c 10.00 + 0.00484T 108000/T 2 273 1173 2 Ca(OH) 2 c 21.4 276 373? CaO Al 2 O 3 2SiO 2 c, anorthite 63.13 + 0.01500T 1537000/T 2 273 1673 1 gls 67.41 + 0.01048T 1874000/T 2 273 973 1 CaO MgO 2SiO 2 c, diopside 54.46 + 0.005746T 1500000/T 2 273 1573 1 gls 51.68 + 0.009724T 1308000/T 2 273 973 1 CaO SiO 2 c, wollastonite 27.95 + 0.002056T 745600/T 2 273 1573 1 c, pseudowollastonite 25.48 + 0.004132T 488100/T 2 273 1673 1 gls 23.16 + 0.009672T 487100/T 2 273 973 1 CaP 2 O 6 c 39.5 287 371? CaSO 4 c 18.52 + 0.02197T 156800/T 2 273 1373 5 CaSO 4 2H 2 O c 46.8 282 373? CaWO 4 c 27.9 292 322? Carbon 5 C c, graphite 2.673 + 0.002617T 116900/T 2 273 1373 2 c, diamond 2.162 + 0.003059T 130300/T 2 273 1313 3 CH 4 g 5.34 + 0.0115T 273 1200 2 CO 6 g 6.60 + 0.00120T 273 2500 1a CO 2 g 10.34 + 0.00274T 195500/T 2 273 1200 1a CS 2 l 18.4 293? Cerium Ce c 5.88 + 0.00123T 273 908? CeO 2 c 15.1 273 373? Ce 2 (MoO 4 ) 3 c 96 273 297? Ce 2 (SO 4 ) 3 c 66.4 273 373? Ce 2 (SO 4 ) 3 5H 2 O c 131.6 273 319? Cesium Cs c 1.96 + 0.0182T 273 301 3 l 8.00 302 3 g 4.97 All 0 CsBr c 12.6 + 0.00259T 273 909? CsCl c 11.7 + 0.00309T 273 752? CsF c 11.3 + 0.00285T 273 957? CsI c 11.6 + 0.00268T 273 894? Chlorine Cl 2 g 8.28 + 0.00056T 273 2000 1a Chromium 4 Cr c 4.84 + 0.00295T 273 1823 5 l 9.70 1823 1923 10 CrCl 3 c 23 286 319? Cr 2 O 3 c 26.0 + 0.00400T 273 2263? CrSb c 12.3 + 0.00120T 273 1383? CrSb 2 c 19.2 + 0.00184T 273 949? Cr 2 (SO 4 ) 3 c 67.4 273 373? Cobalt 4 Co c 5.12 + 0.00333T 273 1763 5 l 8.40 1763 1873 5 CoAs 2 CoS 2 c 32.9 283 373? CoSb c 11.7 + 0.00156T 273 1464? Co 2 Sn c 15.83 + 0.00950T 273 903 2 CoS c 10.6 + 0.00251T 273 1373? CoSO 4 7H 2 O c 96 286 303? 2-162
TABLE 2-194 Heat Capacities of the Elements and Inorganic Compounds (Continued) Heat capacity at constant pressure Range of (T = K; 0 C = 273.1 K), temperature, Uncertainty, Substance State cal/deg mol K % Copper 7 Cu c 5.44 + 0.001462T 273 1357 1 l 7.50 1357 1573 3 CuAl c 9.88 + 0.00500T 273 733 2 CuAl 2 c 16.78 + 0.00366T 273 773 2 Cu 3 Al c 19.61 + 0.01054T 273 775 2 CuI c 12.1 + 0.00286T 273 675? CuI 2 c 20.1 274 328? CuO c 10.87 + 0.003576T 150600/T 2 273 810 2 CuO SiO 2 H 2 O c 29 293 323? CuS c 10.6 + 0.00264T 273 1273? Cu 2 S c, α 9.38 + 0.0312T 273 376 3 c, β 20.9 376 1173 2 CuS FeS c 24 292 321? Cu 2 Sb c 13.73 + 0.01350T 273 573 2 Cu 2 Sb c 21.79 + 0.00900T 273 693 2 Cu 2 Se c, α 20.85 273 383 5 c, β 20.35 383 488 5 Cu 3 Si c 20.3 + 0.00587T 273 1135? CuSO 4 c 24.1 282? CuSO 4 H 2 O c 31.3 282? CuSO 4 3H 2 O c 49.0 282? CuSO 4 5H 2 O c 67.2 282? Fluorine 8 F 2 g 6.50 + 0.00100T 300 3000 5 Gallium Ga 2 O 3 c 18.2 + 0.0252T 273 923? Ga 2 (SO 4 ) 3 c 62.4 273 373? Germanium 4 Ge c Gold Au c 5.61 + 0.00144T 273 1336 2 l 7.00 1336 1573 5 AuSb 2 c, α 17.12 + 0.00465T 273 628 1 c, βγ 11.47 + 0.01756T 628 713? Helium 9 He g 4.97 All 0 Hydrogen 10 H g 4.97 All 0 H 2 g 6.62 + 0.00081T 273 2500 2 HBr g 6.80 + 0.00084T 273 2000 2 HCl g 6.70 + 0.00084T 273 2000 1a HI g 6.93 + 0.00083T 273 2000 2 H 2 O l See Tables 2-355 through 2-357 g 8.22 + 0.00015T + 0.00000134T 2 300 2500? H 2 S g 7.20 + 0.00360T 300 600 8 H 2 S 2 O 7 c 27 281? l 58 308? Indium In c Iodine I 2 g 9.00 300 2000 5 Iridium Ir c 5.50 + 0.00148T 273 1873 1 Iron 4 Fe c, α 4.13 + 0.00638T 273 1041 3 c, β 6.12 + 0.00336T 1041 1179 3 c, γ 8.40 1179 1674 5 c, δ 10.0 1674 1803 5 l 8.15 1803 1873 5 FeAs 2 c 17.8 283 373? Fe 3 C c 25.17 + 0.00223T 273 1173 10 FeCO 3 c 22.7 293 368? FeO c 12.62 + 0.001492T 76200/T 2 273 1173 2 Fe 2 O 3 c 24.72 + 0.01604T 423400/T 2 273 1097 2 Fe 3 O 4 c 41.17 + 0.01882T 979500/T 2 273 1065 2 Fe 2 O 3 3H 2 O c 47.8 286 373? FeS c, α 2.03 + 0.0390T 273 411 5 c, β 12.05 + 0.00273T 411 1468 3 FeS 2 c 10.7 + 0.01336T 273 773? FeSi c 10.54 + 0.00458T 273 903 2 Fe 2 SiO 4 c 33.57 + 0.01907T 879700/T 2 273 1161 2 FeSO 4 c 22 293 373? Fe 2 (SO 4 ) 3 c 66.2 273 373? FeSO 4 4H 2 O c 63.6 282? FeSO 4 7H 2 O c 96 291 319? Krypton Kr g 4.97 All 0 2-163