Phosgene
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CAS
75-44-5
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COCl2
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RTECS
SY5600000
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Synonyms & Trade Names
Carbon oxychloride, Carbonyl chloride, Carbonyl dichloride, Chloroformyl chloride
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DOT ID & Guide
1076 / 125
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Exposure
Limits
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NIOSH REL: TWA 0.1 ppm (0.4 mg/m3) C 0.2 ppm (0.8 mg/m3) [15-minute]
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OSHA PEL: TWA 0.1 ppm (0.4 mg/m3)
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IDLH
2 ppm
See: 75445
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Conversion
1 ppm = 4.05 mg/m3
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Physical Description
Colorless gas with a suffocating odor like musty hay. [Note: A fuming liquid below 47°F. Shipped as a liquefied compressed gas.]
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MW: 98.9
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BP: 47°F
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FRZ: -198°F
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Sol: Slight
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VP: 1.6 atm
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IP: 11.55 eV
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RGasD: 3.48
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Sp.Gr: 1.43 (Liquid at 32°F)
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Fl.P: NA
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UEL: NA
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LEL: NA
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Nonflammable Gas
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Incompatibilities & Reactivities
Moisture, alkalis, ammonia, alcohols, copper [Note: Reacts slowly in water to form hydrochloric acid & carbon dioxide.]
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Measurement Methods
OSHA 61
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact (liquid)
Eyes: Prevent eye contact (liquid)
Wash skin: When contaminated (liquid)
Remove: When wet or contaminated (liquid)
Change: No recommendation
Provide: Quick drench (liquid)
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First Aid (See procedures)
Eye: Irrigate immediately (liquid)
Skin: Water flush immediately (liquid)
Breathing: Respiratory support
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Respirator Recommendations
NIOSH/OSHA
Up to 1 ppm:
(APF = 10) Any supplied-air respirator*
Up to 2 ppm:
(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
Irritation eyes; dry burning throat; vomiting; cough, foamy sputum, dyspnea (breathing difficulty), chest pain, cyanosis; liquid: frostbite
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0007 See MEDICAL TESTS: 0186
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