Carbon dioxide
Synonyms & Trade Names
Carbonic acid gas, Dry ice
[Note: Normal constituent of air (about 300 ppm)].
Exposure Limits
NIOSH REL
TWA 5000 ppm (9000 mg/m3) ST 30,000 ppm (54,000 mg/m3)OSHA PEL
TWA 5000 ppm (9000 mg/m3) See Appendix GMeasurement Methods
Physical Description
Colorless, odorless gas.
[Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]
Molecular Weight
44.0
Boiling Point
Sublimes
Melting Point
-109°F (Sublimes)
Solubility
(77°F): 0.2%
Vapor Pressure
56.5 atm
Ionization Potential
13.77 eV
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Relative Gas Density
1.53
Nonflammable Gas
Incompatibilities & Reactivities
Dusts of various metals, such as magnesium, zirconium, titanium, aluminum, chromium & manganese are ignitable and explosive when suspended in carbon dioxide. Forms carbonic acid in water.
Exposure Routes
inhalation, skin and/or eye contact (liquid/solid)
Symptoms
headache, dizziness, restlessness, paresthesia; dyspnea (breathing difficulty); sweating, malaise (vague feeling of discomfort); increased heart rate, cardiac output, blood pressure; coma; asphyxia; convulsions; frostbite (liquid, dry ice)
Target Organs
respiratory system, cardiovascular system
Personal Protection/Sanitation
(See protection codes)
Skin:Frostbite
Eyes:Frostbite
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
Provide:Frostbite wash
Skin:Frostbite
Eyes:Frostbite
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
Provide:Frostbite wash
First Aid
Respirator Recommendations
NIOSH/OSHA
Up to 40000 ppm:
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
Any appropriate escape-type, self-contained breathing apparatus
See also
INTRODUCTION
ICSC CARD: 0021
Page last reviewed: October 30, 2019
Content
source: National Institute for Occupational Safety and Health