User's Manual

General Information
September 2013 1-8 P/N 81-CO2MAN-001
1-10 CLEAN-UP
Since carbon dioxide is a gas, it can penetrate and spread to all parts of a fire area. As a gas
or as a finely divided solid called 'snow' or 'dry ice', it will not conduct electricity and therefore,
can be used on energized electrical equipment. It leaves no residue, thus eliminating cleanup
of the agent itself.
For the safety of the personnel, the area should be thoroughly ventilated and purged with fresh
air.
Table 1-1. Physical Properties of Carbon Dioxide
Parameter US Units Metric Units
Molecular weight 44 44
Specific gravity, @ 32
o
F and 1 atm 
(0
o
C and 101 kPa abs)
1.524 1.524
Vapor density, @ 32
o
F and 1 atm 
(0
o
C and 101 kPa abs)
0.1234 lb./ft.
3
1.98 kg/m
3
Liquid density, @ 70
o
F (21
o
C) 47.6 lb./ft.
3
(@ 70
o
F) 762 kg/m
3
(@ 21
o
C)
Triple point -69.9°F / 75.1 psia -56.6°C / 518 kPa abs
Sublimation temperature @ 1 atm (101 kPa abs) -109.3°F @ 1 atm -78.5°C
Critical temperature 87.9°F 31.1°C
Critical pressure 1071 psia 7382 kPa abs
Latent heat of sublimation, @ -109.3
o
F (-78.5
o
C)
245.5 BTU/lb. 199.0 kJ/kg
Latent heat of vaporization, @ 2
o
F (-17
o
C)
119.0 BTU/lb. 276.8 kJ/kg