Chlorine
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Synonyms & Trade Names
Molecular chlorine
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CAS No.
7782-50-5
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RTECS No.
FO2100000
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DOT ID & Guide
1017 124
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FormulaCl2
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Conversion
1 ppm = 2.90 mg/m3
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IDLH
10 ppm
See: 7782505
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Exposure Limits
NIOSH REL: C 0.5 ppm (1.45 mg/m3) [15-minute]
OSHA PEL†: C 1 ppm (3 mg/m3)
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Measurement Methods
NIOSH 6011;
OSHA ID101 , ID126SGX
See: NMAM or OSHA Methods |
Physical Description
Greenish-yellow gas with a pungent, irritating odor.
[Note: Shipped as a liquefied compressed gas.]
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MW: 70.9
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BP: -29°F |
FRZ: -150°F |
Sol: 0.7% |
VP: 6.8 atm |
IP: 11.48 eV |
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Fl.P: NA |
UEL: NA |
LEL: NA |
RGasD: 2.47 |
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| Nonflammable Gas, but a strong oxidizer. |
Incompatibilities & Reactivities
Reacts explosively or forms explosive compounds with many common substances such as acetylene, ether, turpentine, ammonia, fuel gas, hydrogen & finely divided metals.
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Exposure Routes
inhalation, skin and/or eye contact
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Symptoms
Burning of eyes, nose, mouth; lacrimation (discharge of tears), rhinorrhea (discharge of thin nasal mucus); cough, choking, substernal (occurring beneath the sternum) pain; nausea, vomiting; headache, dizziness; syncope; pulmonary edema; pneumonitis; hypoxemia (reduced O2 in the blood); dermatitis; liquid: frostbite
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Target Organs
Eyes, skin, respiratory 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 Up to 5 ppm:
(APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against the compound of concern*
(APF = 10) Any supplied-air respirator* Up to 10 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern*
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern
(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 |
| See also: INTRODUCTION
See ICSC CARD: 0126
See MEDICAL TESTS: 0044
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