Chemical Symbol: N2
Synonyms: LIN (liquid only)
CAS Registry Number: 7727-37-9
DOT Classification: Nonflammable gas
DOT Label: Nonflammable gas
Transport Canada Classification: 2.2
UN Number: UN 1066 (compressed gas), UN 1977 (refrigerated
liquid)
U.S. Units
SI Units
Chemical formula
N2
N2
Molecular weight
28.01
28.01
Density of the gas at 70°F (21.1°C)
and 1 atm
0.072 lb/ft3
1.153 kg/m3
Specific gravity of the gas at 70°F
(21.1°C) and
1 atm (air = 1)
0.967
0.967
Specific volume of the gas at 70°F
(21.1°C) and
1 atm
13.89 ft3/lb
0.867 m3/kg
Boiling point at 1 atm
-320.4°F
-195.8°C
Melting point at 1 atm
-345.8°F
-209.9°C
Critical temperature
-232.4°F
-146.9°C
Critical pressure
493 psia
3399 kPa abs
Critical density
19.60 lb/ft3
314.9 kg/m3
Triple point at 1.81
psia (12.5 kPa abs)
-346.0°F
-210.0°C
Latent heat of
vaporization at boiling point
85.6 Btu/lb
199.1 kJ/kg
Latent heat of fusion
at melting point
11.1 Btu/lb
25.1 kJ/kg
Specific heat of the gas at 70°F
(21.1°C) and 1 atm
Cp
0.249 Btu/(lb)(°F)
1.04 kJ/(kg)(°C)
Cv
0.177 Btu/(lb)(°F)
0.741 kJ/(kg)(°C)
Ratio of specific
heats, Cp/Cv
1.41
1.41
Solubility in water,
vol/vol at 32°F (0°C)
0.023
0.023
Density of the liquid
at boiling point and 1 atm
50.47 lb/ft3
808.5 kg/m3
Weight of the liquid at
boiling point
6.747 lb/gal
808.5 kg/m3
Gas/liquid ratio (gas
at 70°F (21.1°C) and 1 atm, liquid at boiling point,
vol/vol)
696.5
696.5
While this information is presented in good faith and
believed to be accurate, GTS-Welco does not guarantee
satisfactory results from reliance upon such information.
Nothing contained herein is to be construed as a warranty or
guarantee, express or implied, regarding the performance,
merchantability, fitness, or any other matter with respect
to the products or processes, nor as a recommendation to use
any product or process in conflict with any patent. GTS-Welco
reserves the right, without notice, to alter the designs or
specifications of the products or processes described
herein.
