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| Chlorobromomethane | CAS 74-97-5 | ||
| CH2BrCl | RTECS PA5250000 | ||
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Synonyms & Trade Names Bromochloromethane, CB, CBM, Fluorocarbon 1011, Halon® 1011, Methyl chlorobromide |
DOT ID & Guide 1887 160 |
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Exposure Limits |
NIOSH REL: TWA 200 ppm (1050 mg/m3) | ||
| OSHA PEL: TWA 200 ppm (1050 mg/m3) | |||
| IDLH 2000 ppm | Conversion 1 ppm = 5.29 mg/m3 | ||
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Physical Description Colorless to pale-yellow liquid with a chloroform-like odor. [Note: May be used as a fire extinguishing agent.] |
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MW: 129.4 |
BP: 155°F |
FRZ: -124°F |
Sol: Insoluble |
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VP: 115 mmHg |
IP: 10.77 eV |
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Sp.Gr: 1.93 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Liquid | |||
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Incompatibilities & Reactivities Chemically-active metals such as calcium, powdered aluminum, zinc & magnesium |
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Measurement Methods NIOSH 1003 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, throat; confusion, dizziness, central nervous system depression; pulmonary edema | |
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Target Organs
Eyes, skin, respiratory system, liver, kidneys, central nervous system |
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| See also: INTRODUCTION |