Properties Of Fluids

Appendix B

PROPERTIES OF FLUIDS

This section contains the following:

Figure B-1. Compressibility factor Z for Pr = 0 to 0.5.

Figure B-2. Compressibility factor Z for Pr = 0 to 10.

Figure B-3. Compressibility factor Z for Pr = 0 to 40.

Table B-1. Physical constants of gases and vapors.

Table B-1 Physical Constants of Gases

Gas		M Molecular Mass	R Individual Gas constant		Isentropic Coefficient	Tc Critical Temperature		Pc Critical Pressure (absolute)
Gas					k for P → atm T = 273K = 492R	°K	°R	MPa	lb/in²
Acetylene	C2H2	26.078	318.82	59.24	1.23	309.09	556.4	6.237	904.4
Air	—	28.96	287.09	53.35	1.40	132.4	238.3	3.776	547.5
Ammonia	NH3	17.032	488.15	90.71	1.31	405.6	730.1	11.298	1638.2
Argon	Ar	39.994	208.15	38.68	1.65	150.8	271.4	4.864	705.3
Benzol	C6H6	78.108	106.44	19.78	—	561.8	1011.2	4.854	703.9
Butane-n	C4H10	58.124	143.04	26.58	—	425.2	765.4	3.506	508.4
Butan-i	C4H10	58.124	143.04	26.58	—	408.13	734.6	3.648	529.0
Butylene	C4H8	56.108	148.18	27.54	—	419.55	755.2	3.926	569.2
Carbon dioxide	CO2	44.011	188.91	35.10	1.30	304.2	547.6	7.385	1070.8
Carbon disulfide	CS2	76.142	109.19	20.29	—	546.3	983.3	7.375	1069.4
Carbon monoxide	CO	28.011	296.82	55.16	1.40	133.0	239.4	3.491	506.2
Carbon oxysulfide	COS	60.077	138.39	25.72	—	375.35	675.6	6.178	895.9
Chlorine	Cl2	70.914	117.24	21.79	1.34	417.2	751.0	7.698	1116.3
Cyanogen	C2N2	52.038	159.77	29.69	—	399.7	719.5	5.894	854.6
Ethane	C2H6	30.070	276.49	51.38	1.20	305.42	549.8	4.884	708.2
Ethylene	C2H4	28.054	296.36	55.07	1.25	282.4	508.3	5.070	735.2

Table B-1. Physical constants of Gases
(continued)

Gas		M Molecular Mass	R Individual Gas constant		Isentropic Coefficient	Tc Critical Temperature		Pc Critical Pressure (absolute)
Gas					k for P → atm T = 273K = 492R	°K	°R	MPa	lb/in²
Methane	CH4	16.034	518.24	96.30	1.31	190.7	343.3	4.629	671.2
Methyl chloride	CH3Cl	50.491	164.66	30.60	—	416.2	749.2	6.669	667.0
Neon	Ne	20.183	411.94	76.55	1.64	44.4	79.9	2.654	384.8
Nitric oxide	NO	30.008	277.06	51.48	1.39	180.2	324.4	6.541	948.5
Nitrogen	N2	28.016	296.76	55.15	1.40	126.3	227.3	3.383	490.6
Nitrous oxide	N2O	44.016	188.89	35.10	1.28	309.7	557.5	7.267	1053.7
Oxygen	O2	32.000	259.82	48.28	1.40	154.77	278.6	5.080	736.6
Sulfur dioxide	SO2	64.066	125.77	24.11	1.28	430.7	775.3	7.885	1143.3
Propane	C3H8	44.097	188.54	35.04	—	370.0	666.0	4.256	617.15
Propylene	C3H6	42.081	197.56	36.71	—	364.91	656.8	4.621	670.1
Toluene	C7H8	92.134	90.24	16.77	—	593.8	1068.8	4.207	610.0
Water vapor	H2O	18.016	461.48	85.75	1.33^*	647.3	1165.1	22.129	3208.8
Xylene	C8H10	106.16	78.32	14.55	—	—	—	—	—

*at 100 ℃

Source: VD Blatt 4, Entwurf, Jan. 1970, Berechnungsgrundlagenfürdie Durchussmessung mit Drosselgerften, Stoffwerte. By Courtesy of VDI/VDE—Gesellschaft für Mess-und Regelungstechni.

Properties Of Fluids