Chlorobromomethane |
Synonyms & Trade Names Bromochloromethane, CB, CBM, Fluorocarbon 1011, Halon® 1011, Methyl chlorobromide |
CAS No. 74-97-5 |
RTECS No. PA5250000 |
DOT ID & Guide 1887 160 |
FormulaCH2BrCl |
Conversion 1 ppm = 5.29 mg/m3 |
IDLH 2000 ppm
See: 74975 |
Exposure Limits NIOSH REL: TWA 200 ppm (1050 mg/m3)
OSHA PEL: TWA 200 ppm (1050 mg/m3) |
Measurement Methods
NIOSH 1003
See: NMAM or OSHA Methods |
Physical Description Colorless to pale-yellow liquid with a chloroform-like odor. [Note: May be used as a fire extinguishing agent.] |
MW: 129.4 |
BP: 155°F |
FRZ: -124°F |
Sol: Insoluble |
VP: 115 mmHg |
IP: 10.77 eV |
Sp.Gr: 1.93 |
Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Liquid |
Incompatibilities & Reactivities Chemically-active metals such as calcium, powdered aluminum, zinc & magnesium |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, throat; confusion, dizziness, central nervous system depression; pulmonary edema |
Target Organs Eyes, skin, respiratory system, liver, kidneys, central nervous system |
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Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH/OSHA Up to 2000 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(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 organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0392
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