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Physical Properties of Gases at Standard Temperature Pressure
Properties are generally at Standard Temperature and Pressure (273 K, 1 atm)
| Gas |
|
MW |
Density
** |
Freezing
Temper
ature |
Boiling
Tempe |
Critical
Temper
ature |
Critical
Pressure |
Critical
Density |
Thermal
Condu
ctivity
|
Dynamic Viscosity
** |
| kg/m3 |
Deg K |
Deg. K |
Deg. K |
x 105 Pa |
kg/m3 |
(mW/m.K) |
μP |
| Acetylene |
C2H2 |
26.04 |
1.173 |
192.44
(melt)
189
(subl.) |
189.04 |
308.36 |
61.39 |
230.41 |
21.3 |
10.22 |
| Air |
|
29 |
1.293 |
59.15 |
78.67 |
132.45 |
37.7 |
316.56 |
24.1 |
181 |
| Ammonia |
Nh4 |
17 |
0.77 |
83.84 |
87.32 |
150.1 |
112.8 |
235.29 |
24.2 |
10.13 |
| Argon |
Ar |
39.95 |
1.783 |
84 |
87 |
151 |
48.98 |
531 |
16.2 |
223 |
| n-Butane |
C4H10 |
58.1 |
2.672 |
134.9 |
272.69 |
425.22 |
37.97 |
227.95 |
13.77 |
69.02 |
| Carbon Dioxide |
CO2 |
44 |
1.977 |
194,7
sublimes |
** |
304 |
74 |
460 |
14.5 |
147 |
| Carbon Monoxide |
CO |
28.01 |
1.25 |
68.19 |
81.74 |
132.96 |
34.99 |
270.27 |
24.6 |
177.5 |
| Chlorine |
Cl2 |
70.9 |
3.214 |
172.16 |
239.16 |
417.19 |
77.1 |
571.43 |
8.034 |
123 |
| Ethane |
C2H6 |
30.07 |
1.356 |
90.39 |
184.59 |
305.06 |
48.8 |
203 |
21.18 |
93.76 |
| Ethylene |
C2H4 |
28.05 |
1.26 |
104.04 |
169.45 |
282.2 |
50.4 |
214.13 |
17.97 |
93.76 |
| Helium |
He |
4.03 |
0.178 |
1.89 |
4.26 |
5.24 |
2.3 |
69.93 |
146 |
187 |
| Hydrochloric Acid |
HCl |
36.5 |
1.639 |
159 |
188 |
324 |
83.1 |
450.45 |
13.43 |
134 |
| Hydrogen |
H2 |
2.02 |
0.09 |
14 |
20.4 |
33.23 |
13 |
31.4 |
168.4 |
88 |
| Hydrogen Sulphide |
H2S |
34.1 |
1.538 |
187.7 |
212.8 |
373.57 |
89.63 |
346.02 |
12.65 |
11.71 |
| Methane |
CH4 |
16 |
0.716 |
90.71 |
111.7 |
190.6 |
46.04 |
161.58 |
30.01 |
103.3 |
| Methyl Chloride |
CH3Cl |
50.5 |
2.308 |
175.49 |
248.97 |
416.29 |
66.8 |
352.86 |
179.2 |
100.4 |
| Natural Gas |
|
19.5 |
0.862 |
|
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| Neon |
Ne |
|
0.902 |
24.59 |
27.13 |
44 |
26.53 |
483.79 |
46.11 |
297 |
| Nitric Oxide |
NO |
30 |
1.389 |
112.19 |
121.42 |
180.19 |
64.8 |
518.13 |
23.69 |
178 |
| Nitrogen |
N2 |
28 |
1.25 |
|
|
|
33.9 |
311 |
24.3 |
174 |
| Nitrous Oxide |
N2O |
44 |
1.978 |
182.37 |
184.71 |
309.61 |
72.45 |
451.67 |
15.52 |
134.9 |
| Oxygen |
O2 |
32 |
1.429 |
54 |
90 |
154 |
50.4 |
430 |
24.4 |
200 |
| Propane |
C3H8 |
44.1 |
2.019 |
85.56 |
231.15 |
369.86 |
42.49 |
220.36 |
15.91 |
75.98 |
| Sulphur Dioxide |
SO2 |
64.1 |
2.927 |
200.04 |
263.17 |
430.79 |
78.84 |
524.93 |
8.42 |
117.9 |
The critical temperature is the maximum temperature at which a gas can be liquified. (above this temperature a liquid cannot exist)
The critical pressure is the pressure to liquify the gas at this temperature.
The critical density is the resulting density at these conditions
The viscosity values are in μP to obtain μPa.s = μN.s/m2 divide table values by 10
The properties ** are temperature related.
** Carbon dioxide has a triple point where solid liquid and gas co-exist at 216,6 K and 5,18 bar abs.
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