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| Carbon dioxide | CAS 124-38-9 | ||
| CO2 | RTECS FF6400000 | ||
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Synonyms & Trade Names Carbonic acid gas, Dry ice [Note: Normal constituent of air (about 300 ppm)]. |
DOT ID & Guide 1013 120 1845 120 (dry ice) 2187 120 (liquid) |
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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) | |||
| IDLH 40,000 ppm | Conversion 1 ppm = 1.80 mg/m3 | ||
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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 |
BP: Sublimes |
MLT: -109°F (Sublimes) |
Sol(77°F): 0.2% |
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VP: 56.5 atm |
IP: 13.77 eV |
RGasD: 1.53 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Nonflammable Gas | |||
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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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Measurement Methods NIOSH 6603; OSHA ID172 |
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Personal Protection & Sanitation Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: No recommendation Change: No recommendation Provide: Frostbite |
First Aid (See procedures) Eye: Frostbite Skin: Frostbite Breathing: Respiratory support |
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Respirator Recommendations
NIOSH/OSHA Up to 40,000 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 |
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| 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) | |
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Target Organs
respiratory system, cardiovascular system |
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| See also: INTRODUCTION |