Carbon monoxide
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CAS
630-08-0
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CO
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RTECS
FG3500000
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Synonyms & Trade Names
Carbon oxide, Flue gas, Monoxide
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DOT ID & Guide
1016 / 119
9202 / 168 (cryogenic liquid)
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Exposure
Limits
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NIOSH REL: TWA 35 ppm (40 mg/m3) C 200 ppm (229 mg/m3)
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OSHA PEL†: TWA 50 ppm (55 mg/m3)
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IDLH
1200 ppm
See: 630080
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Conversion
1 ppm = 1.15 mg/m3
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Physical Description
Colorless, odorless gas. [Note: Shipped as a nonliquefied or liquefied compressed gas.]
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MW: 28.0
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BP: -313°F
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MLT: -337°F
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Sol: 2%
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VP: >35 atm
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IP: 14.01 eV
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RGasD: 0.97
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Fl.P: NA (Gas)
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UEL: 74%
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LEL: 12.5%
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Flammable Gas
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Incompatibilities & Reactivities
Strong oxidizers, bromine trifluoride, chlorine trifluoride, lithium
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Measurement Methods
NIOSH 6604; OSHA ID209, ID210
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
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First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
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Respirator Recommendations
NIOSH
Up to 350 ppm:
(APF = 10) Any supplied-air respirator
Up to 875 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 1200 ppm:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern†
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator 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:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern†/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin and/or eye contact (liquid)
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Symptoms
Headache, tachypnea, nausea, lassitude (weakness, exhaustion), dizziness, confusion, hallucinations; cyanosis; depressed S-T segment of electrocardiogram, angina, syncope
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Target Organs
cardiovascular system, lungs, blood, central nervous system
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See also: INTRODUCTION
See ICSC CARD: 0023 See MEDICAL TESTS: 0040
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