Carbon dioxide
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Synonyms & Trade Names
Carbonic acid gas, Dry ice
[Note: Normal constituent of air (about 300 ppm)].
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CAS No.
124-38-9
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RTECS No.
FF6400000
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DOT ID & Guide
1013 120
1845 120 (dry ice)
2187 120 (liquid)
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FormulaCO2
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Conversion
1 ppm = 1.80 mg/m3
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IDLH
40,000 ppm
See: 124389
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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)
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Measurement Methods
NIOSH 6603;
OSHA ID172
See: NMAM or OSHA Methods |
Physical Description
Colorless, odorless gas.
[Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]
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MW: 44.0
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BP: Sublimes |
MLT: -109°F (Sublimes) |
Sol(77°F): 0.2% |
VP: 56.5 atm |
IP: 13.77 eV |
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Fl.P: NA |
UEL: NA |
LEL: NA |
RGasD: 1.53 |
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| 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.
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Exposure Routes
inhalation, skin and/or eye contact (liquid/solid)
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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)
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Target Organs
respiratory system, cardiovascular system
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Personal Protection/Sanitation
(See protection codes)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
Provide: Frostbite wash |
First Aid
(See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
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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
Important additional information about respirator selection |
| See also: INTRODUCTION
See ICSC CARD: 0021
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