Physical properties of gases

Available tables: dry air gases flue gases water steam

This table gives values of some physical properties of some gases.

		Gas density	Molar weight	Gas constant	Spec. heat at 20OC and 1 bar			Dynamic viscosity
GAS		rho	M*103	R	Cp	Cv	kapa=Cp/Cv	mi*106
		[kg/m3]	[kg/mol]	[J/kg*K]	[J/kg*K]	[J/kg*K]	[-]	[Pa*s] - 0OC and 1 bar
Acethylene	C2H2	1.171	26.04	319.6	1683	1352	1.25	9.35
Ammonia	NH3	0.771	17.03	488.3	2219	1680	1.37	9.18
Argon	Ar	1.782	39.94	208.5	532	322	1.65	20.9
Nitrogen	N2	1.251	28.02	296.7	1047	746	1.4	17
Nitrogen Oxide	NO	1.34	30.01	277.1	975	696	1.38	17.8
Butane	C4H10	2.673	58.12	143.2	1917	1733	1.108	8.1
i-Butane	C4H10	2.668	58.12	143.2	1632	-	-	7.47
Ethane	C2H6	1.357	30.06	276.7	1729	1445	1.2	8.5
Ethylene	C2H4	1.261	28.05	296.6	1528	1222	1.25	9.85
Ethyl Ether	C4H10O	-	74.12	112.2	2302	-	-	286
Ethyl Chloride	C2H5Cl	-	64.5	129	1340	-	-	9.4
Helium	He	0.178	4.002	2079	5274	3181	1.66	18.8
Chlor	Cl2	3.217	70.91	117.3	481	355	1.36	12
Hydrogen Chloride	HCl	1.639	36.47	228	812	583	1.4	-
Oxygen	O2	1.429	32	259.9	913	653	1.4	20.3
Krypton	Kr	3.708	83.7	100.3	251	151	1.67	23.2
Xenon	Xe	5.851	131.3	63.84	159	96.3	1.7	21
Methane	CH4	0.717	16.03	518.8	2225	1700	1.31	10.3
Methyl Chloride	CH3Cl	2.308	50.48	164.8	741	582	1.28	9.89
Neon	Ne	0.9002	20.18	411.7	1038	620	1.68	29.7
Ozone	O3	2.22	48	173.4	-	-	1.29	-
Pentane	C5H12	-	72.1	115.2	1717	1575	1.09	8.74
Propane	C3H8	2.02	44.06	188.8	1863	1650	1.13	7.95
Propene	C3H6	1.914	42.05	198.8	1635	1437	1.17	8.35
Sulphur Dioxide	SO2	2.927	64.06	129.8	633	503	1.25	11.7
Sulphur Hydrogen	H2S	1.539	34.09	244.2	1059	804	1.3	11.66
Carbon Dioxide	CO2	1.976	44.01	189	837	653	1.3	13.7
Carbon Monoxide	CO	1.25	28.01	297	1047	754	1.4	16.6
Air		1.293	28.95	287	1010	720	1.4	17.3
Hydrogen	H2	0.08985	2.016	4125	14266	10130	1.407	8.42

This table gives values of some physical properties in relation to the temperature of gases.

GAS		t [OC]	0	100	200	300	400	500	600	700	800
Nitrogen	N2	cp [kJ/kgK]	1.039	1.042	1.052	1.069	1.091	1.115	1.139	1.161	1.181
		mi*106 [Pas]	16.6	20.8	24.6	28	31.1	33.9	36.6	39	41.3
		lambda*103 [W/mK]	24.31	31.52	38.5	44.89	50.71	55.82	60.36	64.2	67.45
Argon	Ar	cp [kJ/kgK]	0.522	0.521	0.521	0.521	0.521	0.52	0.52	0.52	0.52
		mi*106 [Pas]	21.2	27.1	32.1	36.7	41	45.22	48.7
		lambda*103 [W/mK]	16.51	21.17	25.59	29.89	33.96	37.91	39.43
Butane	C4H10	cp [kJ/kgK]	1.591	2.026	2.453	2.813	3.127	3.403	3.642
		mi*106 [Pas]	6.84	9.26	11.67	14.03	16.38	18.74	21.09
		lambda*103 [W/mK]	13.26	23.5	36.52	51.87	29.78	90.25	113
Ethane	C2H6	cp [kJ/kgK]	1.647	2.067	2.49	2.87	3.214	3.519	3.787	4.022	4.216
		mi*106 [Pas]	8.55	11.5	14.1	16.4	19	21.4	23.8
		lambda*103 [W/mK]	18	31.7	47.7	65.9
Ethylene	C2H4	cp [kJ/kgK]	1.406	1.737	2.064	2.394	2.721	3.052	3.382	3.709	4.039
		mi*106 [Pas]	9.6	12.7	15.6	18.2	20.6	22.8	24.9	26.8	28.7
		lambda*103 [W/mK]	16.4	29.54	44.19	59.43	75.71	92.34	108.39	123.3	134.9
Helium	He	cp [kJ/kgK]	5.204	5.204	5.204	5.204	5.204	5.204	5.204	5.204	5.204
		mi*106 [Pas]	18.74	22.96	26.98	30.8	34.33	37.57	40.32
		lambda*103 [W/mK]	143	179.1	212.8	244.2	275.6	304.7	332.6
Oxygen	O2	cp [kJ/kgK]	0.915	0.934	0.963	0.995	1.024	1.048	1.069	1.086	1.1
		mi*106 [Pas]	19.2	24.4	29	33.1	26.9	40.3	43.5	46.5	49.3
		lambda*103 [W/mK]	24.66	32.91	40.7	48.03	55.01	61.52	67.45	72.8	77.69
Methane	CH4	cp [kJ/kgK]	2.165	2.448	2.807	3.175	3.529	3.856	4.153	4.421	4.659
		mi*106 [Pas]	10.4	13.3	16.1	18.5	20.8	22.7	24.6	26.5	28.2
		lambda*103 [W/mK]	30.24	41.29	51.87	62.34	72.22	81.88	91.3	100.5	109.3
Propane	C3H8	cp [kJ/kgK]	1.549	2.017	2.458	2.834	3.161	3.449	3.697	3.916	4.093
		mi*106 [Pas]	7.5	10.06	12.48	14.75	17.15	19.4	21.8
		lambda*103 [W/mK]	15	27.4	41.7	57.9	76	95.8
Propene	C3H6	cp [kJ/kgK]	1.426	1.8	2.16	2.476	2.753	2.991	3.2	3.388	3.54
		mi*106 [Pas]	7.84	10.73	13.4	15.92
		lambda*103 [W/mK]	14	25.6	38.9	53.7
Sulfur dioxide	SO2	cp [kJ/kgK]	0.607	0.662	0.712	0.754	0.783	0.808	0.825	0.837	0.85
		mi*106 [Pas]	12.1	16.1	20	23.8	27.5	31.3	35	38.6	42.1
		lambda*103 [W/mK]	8.37	12.33	16.63	21.17	25.82	30.7	35.82	41.05	46.29
Carbon dioxide	CO2	cp [kJ/kgK]	0.815	0.914	0.993	1.057	1.11	1.155	1.192	1.223	1.249
		mi*106 [Pas]	13.8	18.4	22.6	26.4	29.9	33.2	36.2	38.1	41.8
		lambda*103 [W/mK]	14.65	22.79	30.94	39.08	47.22	54.89	62.1	68.85	75.13
Carbon monoxide	CO	cp [kJ/kgK]	1.104	1.045	1.058	1.08	1.106	1.132	1.157	1.179	1.999
		mi*106 [Pas]	16.6	20.9	24.6	27.8	39	33.8	36.3	38.7	41
		lambda*103 [W/mK]	23.26	30.12	36.52	42.57	48.5	54.08	59.66	65.01	70.13
Hydrogen	H2	cp [kJ/kgK]	14.195	14.448	14.504	14.533	14.581	14.662	14.779	14.93	15.115
		mi*106 [Pas]	8.4	10.3	12.1	13.9	15.4	16.9	18.3	19.6	21
		lambda*103 [W/mK]	174.4	216.3	258.2	300.1	341.9	383.8	452.7	467.5	509.4

where is:

• t - temperature
• c_p - specific heat
• mi - dynamic viscosity
• lambda - thermal conductivity