5.8THERMAL CONDUCTIVITY

TABLE 5.24	Thermal Conductivities of Gases as a Function of Temperature
The coefficient	k , expressed in J · sec		1	· cm	1	1	, is	the quantity		of	heat in joules, transmitted per second
						· K
through a sample one centimeter in thickness and one square centimeter in area when the temperature difference
between the two sides is one degree kelvin (or Celsius). The tabulated values are in microjoules. To convert to
microcalories, divide values by 4.184. To convert to mW · m								1		1	, divide values by 10.
									· K
														Temperature,	C
Substance			40			20			0		20		40	60		80	100	120	140	160
Acetone						80		95			107	124		140	156	173	190	207
Acetaldehyde											109	126		142	159	176	195
Acetonitrile														112		124	137	151	166
Acetylene	118			75					184		205		224		248	269	290
Air								242			256		270		284	299	311	324	336	342149
Ammonia	164			60					218		238		259		280	301	321
Argon								166			176	186		196	206	211
Benzene														126		146	165	184	205	226
Boron trifluoride											186								241
Bromine								42			45	50		54		59
Bromomethane												82		94	104	117
1-Butanamine								135		6.5							176 110
Butane								135			154	174		193	213	233
Carbon dioxide								144			160	176	192		207	215
Carbon disulfide								67			76	85
Carbon monoxide							228				245	262		278
Carbon tetrachloride								59			64	70		75	80	86			109	184
Chlorine	64					72		79			85	93		100
Chlorodifluorimethane				103			110		116		122
Chloroethane								90			105	120		134	151	167	186	204
Chloroform													75		84	91	99	107	116
Chloromethane								84			105	117	130		142	155
Cyclohexane								77			99	120		141	163	184	206	230	256
Cyclopropane														192		218	243	270
148.5

									Temperature,		C
	Substance		40	20		0	20	40	60		80		100		120	140		160
	Deuterium	1150		1222	1297		1372	1448	1523
	Deuterium oxide														263				358220
	Dibromomethane														74 110
	Dichlorodifluoromethane			81	84		92	100				138				194			200
	1,1-Dichloroethane				69		81	93	105		117	129		144
	1,2-Dichloroethane												127		140
	Dichlorofluoromethane			91	94		97	100
	Dichloromethane				93							161
	1,2-Dichlorotetrafluoroethane						99							153			211		227
	Diethylamine				118				179		199	218		243		268
	Diethyl ether				113		135	157	178		200	222			244	269		351	213
	1,4-Dioxane												167		187	207
	Ethane	137		159	182		204	228	257		288		316		344
	Ethanol				126		141	155				209
	Ethene							23049
	Ethyl acetate							115	133		151	170		191		211	234
	Ethylamine				136		153	169	206
	Ethylene	137		158	178		220	241	262		282
	Ethylene oxide												193		256	279
	Ethyl formate				79		100	121	142		164	186		206		226
	Ethyl nitrate												159		178	197
	Fluorine	212		230	247		264	278	294		309		325
	Helium	1276		1343	1423		1481	1540	1598		1661	1720	1778
	Heptane				100		115	130				174
	Hexane				109						178	201		224		247		271
	Hydrogen	1494		1607	1724		1828	1925	2025
	Hydrogen bromide	64		70	77		84	90	97	104
	Hydrogen chloride	107		117	128		138	148						191		240			227
	Hydrogen cyanide			99	110		121	132	143
	Hydrogen sulfide			116	129		143	156	169
	Iodomethane				46		53	60	68		75	82			89
	Krypton			79	85			95					110
	Methane	257		280	307		334	361	387		416	445
	Methanol								174		197		221		241	263		284
	Methyl acetate				67				150		70		177		195	215		237
	2-Methylbutane				122							215
	2-Methylpropane				141		156	176	196			233		93	271				421227
149.5

TABLE 5.24	Thermal Conductivities of Gases as a Function of Temperature (						Continued		)
										Temperature,	C
Substance		40		20	0	20			40	60	80	100	120		140	160
2-Methyl-2-propanol												225
Neon	410			433	454	476		497		518	537	556
Nitric oxide	205			221	238	254			269	285	301	317
Nitrogen	211			226	241	256			270	282	295	307	320		333	385	227
Nitromethane													139		155
Nitrous oxide	121			137	152	168		184
Octafluorocyclobutane						120							190
Oxygen	211			228	245	261			278	294	311	328
Pentane					130							218
Propane	116			132	151	171		192		215	238	262	330	353	379
2-Propanol						151	31								127
															250
Sulfur dioxide					83			163			106
Sulfur hexafluoride						126							201	275	227	338	327
Tetrafluoromethane						235							235
Thiophene												110
												152
1,1,2-Trichlorotrifluoroethane						87							133
Triethylamine												195	216		239
Water				142	159	175			191	207	224	241	257
Xenon	36		73			54							72		227	104	327
															89

150.5

							PHYSICAL		PROPERTIES														5.151
TABLE 5.25			Liquid Thermal Conductivity of Various Substances
All values of thermal conductivity,						k , are in millijoules cm				1		1	1	. To convert to mJ · cm							1	1	1	into
											· s		· K									· s	· K
mW · m	1	1	, divide by 10.
		· K
									Thermal conductivity in mJ · cm								1		1	1
																		· s		· K
	Substance					25C		0	C	20 C			25 C			50 C				75 C			100	C
Acetaldehyde									1.900
Acetic acid													1.58			1.53			1.49				1.44
Acetic anhydride									2.209
Acetone					1.987		80	1.69		1.61						1.51 40
Acetonitrile					2.08		1.98						1.88			1.78			1.68
Allyl alcohol												1.80		30
Aniline										1.77	17
Argon					1.259		189
Benzaldehyde													1.51			1.41			1.31			1.21
Benzene													1.411			1.329			1.247
Bromobenzene									1.113
Bromoethane									1.029
1-Bromo-2-methylpropane							1.163		12
1-Bromopentane									0.983
Bromopropane							1.075		12
Butanoic acid							1.506		12
1-Butanol							1.538						1.54			1.49
2-Butanone					1.58		1.51						1.45			1.39				1.33
Butyl acetate										1.368
2-Butyne					1.37		1.29						1.21
Carbon disulfide							1.54					1.49
Carbon tetrachloride					1.100		20	1.071		1.029						0.974
Chlorobenzene					1.36		1.31			1.27				1.22				1.17				1.12
Chloroethane					1.45		1.32					1.19			1.06			0.93
Chloroform					1.27		1.22						1.17		1.12				1.07			1.02
(Chloromethyl)oxirane				1.42			1.37			1.31			1.25				1.19				1.14
1-Chloro-2-methylpropane							1.163		12
1-Chloropentane							1.184		12
Chloropropane							1.184		12
4-Chlorotoluene									1.297
m -Cresol										1.498									1.452 80
Cyclohexane									1.243			1.23			1.17			1.11
Cyclohexene					1.42		1.36					1.30			1.24			1.18
Cyclohexanol												1.34			1.31
Cyclopentane					1.40		1.33				1.26
Cyclopentene					1.43		1.36				1.29
Decane					1.44		1.38						1.32			1.26			1.19				1.13
1-Decanol												1.62				1.56			1.50				1.45
Dibromomethane					1.20		1.14				1.08			1.03			0.97
Dibutyl phthalate					1.44		1.40					1.36			1.33		1.29					1.25
1,2-Dichloroethane							1.264
Dichlorofluoromethane				0.134
Dichloromethane					1.590		20	1.564		1.477
Diethyl ether					1.50		1.40						1.30		1.20				1.10			1.00
Diisopropyl ether									1.096
2,3-Dimethylbutane												1.038			32	0.996
N,N -Dimethylformamide											1.84			1.78			1.71				1.65
Dimethyl phthalate							1.501				1.473			1.443			1.409				1.373

5.152					SECTION	5
TABLE 5.25 Liquid Thermal Conductivity of Various Substances (								Continued		)
					Thermal conductivity in mJ · cm					1	1	1
											· s	· K
Substance		25C		0	C	20 C		25 C		50 C		75 C		100	C
1,4-Dioxane								1.59		1.47	1.35			1.23
Diphenyl ether									1.39		1.35			1.31
Dodecane				1.57				1.52		1.46		1.40		1.35
1-Dodecanol							1.46		1.42		1.39			1.35
Ethanol				1.76				1.69	1.62
Ethanolamine							2.99		2.86		2.74			2.61
Ethoxybenzene					1.497
Ethyl acetate	1.62			1.53				1.44		1.35	1.26
Ethylbenzene							1.30		1.24		1.18			1.12
Ethylene glycol				2.56				2.56		2.56		2.56			2.56
Ethyl formate				1.581	12
Furan	1.42			1.34				1.26
Glycerol								2.92		2.95		2.97			3.00
Heptane	1.378			1.303	1.259		1.228			1.152		1.077
1-Heptanol				1.66			1.59		1.53		1.47			1.41
Hexadecane							1.40		1.35		1.30		1.25
Hexane	1.37			1.28	1.218			1.20		1.11	1.92			0.93
1-Hexanol	1.59			1.54				1.50		1.45		1.41		1.37
2-Hexanone	1.51			1.45				1.39	1.33		1.27			1.21
1-Hexene	1.37			1.29			1.21		1.13
Hydrochloric acid, 38%					4.402		32
Hydrogen	1.180		253
Iodobenzene	1.063		20			1.276						0.937 80
Iodoethane								1.109	30
1-Iodo-2-methylpropane			0.870		12
1-Iodopentane				0.849	12
Iodopropane				0.920	12
Isopentyl acetate					1.297
Isopropylbenzene							1.28		1.20		1.12			1.07
Mercury	72.5			77.7				82.5		86.8		90.7		94.3
Methanol	2.14			2.07		2.021		2.00		1.93
Methoxybenzene	1.70		1.63				1.56	1.50		1.43		1.36
Methyl acetate	1.74			1.64			1.53		1.43		1.33		1.22
Methyl butanoate					1.402
3-Methylbutanoic acid			1.305
3-Methyl-1-butanol							1.477		30
Methylcyclohexane							1.276		30
Methylcyclopentane							1.209		1.151		38
N -Methylformamide							2.03		2.01		1.99		1.96
1-Methyl-4-isopropylbenzene	1.32		1.27				1.22		1.17	1.12			1.07
2-Methylpentane							1.084		32	1.033
Methyl pentanoate			1.318		12
4-Methylpentanoic acid			1.427		12
4-Methyl-3-pentene-2-one	1.70		1.63				1.56	1.49		1.42			1.34
2-Methyl-1-propanol				1.423	12
2-Methyl-2-propanol							1.159		38			1.067	77
Nitrobenzene					1.510
Nitromethane							2.151		30
Nonane	1.44			1.38			1.31		1.24		1.151		80	1.11

						PHYSICAL	PROPERTIES								5.153
TABLE 5.25 Liquid Thermal Conductivity of Various Substances (									Continued			)
							Thermal conductivity in mJ · cm					1	1	1
													· s	· K
Substance		25C				0	C	20 C	25 C			50 C		75 C	100 C
1-Nonanol						1.66		1.61			1.55		1.49		1.43
Octadecane											1.46		1.42		1.37
Octane	1.43					1.35			1.28			1.20		1.13	1.06
1-Octanol						1.68		1.657	1.61		1.54		1.47		1.41
Palmitic acid													1.598
Pentachloroethane							1.251
Pentane	1.32					1.22		1.138	1.13			1.03	0.95		0.87
Pentanoic acid					1.360		12
1-Pentanol						1.57			1.53			1.49	1.45
1-Pentene	1.31				1.24				1.16
Pentyl acetate								1.289
Phenol												1.56		1.53	1.51
Phenylhydrazine									1.724
1,2-Propanediol						2.02			2.00			1.99		1.98	1.97
Propanoic acid				1.728			12
1-Propanol	1.62					1.58			1.54			1.49		1.45	1.41
2-Propanol	1.46					1.41			1.35			1.29	1.24		1.18
1,2-Propylene glycol					2.008
Propyl formate				1.494			12
Pyridine						1.69			1.65			1.61	1.58
Silicon tetrachloride								0.99			0.96
Sodium															753.1 300
Sodium chloride (aq, satd)	5.732
Stearic acid														1.598
Styrene	1.48					1.42			1.37			1.31	1.26		1.20
Sulfuric acid, 90%								3.540			32
1,1,2,2-Tetrachloroethane				1.138
Tetrachloroethylene	1.17						1.10	1.04	0.97
Tetrachloromethane	1.04					0.99		0.93	0.88
Tetradecane									1.36		1.31		1.26		1.21
1-Tetradecanol											1.67		1.62		1.57
Tetrahydrofuran	1.32			1.26					1.20		1.14
Thiophene									1.99		1.95		1.91		1.86
Toluene	1.590		80			1.386		1.347	1.311			1.236	1.161
1,1,1-Trichloroethane	1.06						1.01	0.96
Trichloroethylene	1.359		60			1.24			1.160			1.08		1.00
Trichloromethane	1.27		1.22					1.17			1.12		1.07
Tridecane									1.37		1.32		1.27		1.22
Triethylamine	1.464		80					1.209				1.113	44
Trimethylamine	1.43		1.33
1,3,5-Trimethylbenzene	1.47		1.41					1.36		1.30		1.24		1.18
2,2,4-Trimethylpentane									0.966		38			0.841 77
Undecane									1.40			1.35	1.29		1.23
Water						5.610		5.983	6.071			6.435	6.668		6.791
m -Xylene									1.30			1.24		1.18	1.13
o -Xylene									1.31			1.26		1.20	1.14
p -Xylene									1.30			1.24		1.18	1.12