Difluorodibromomethane
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CAS
75-61-6
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CBr2F2
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RTECS
PA7525000
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Synonyms & Trade Names
Dibromodifluoromethane; Freon® 12B2; Halon® 1202
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DOT ID & Guide
1941 / 171
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Exposure
Limits
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NIOSH REL: TWA 100 ppm (860 mg/m3)
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OSHA PEL: TWA 100 ppm (860 mg/m3)
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IDLH
2000 ppm
See: 75616
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Conversion
1 ppm = 8.58 mg/m3
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Physical Description
Colorless, heavy liquid or gas (above 76°F) with a characteristic odor.
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MW: 209.8
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BP: 76°F
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FRZ: -231°F
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Sol: Insoluble
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VP: 620 mmHg
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IP: 11.07 eV
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Sp.Gr(59°F): 2.29
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Liquid
Nonflammable Gas
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Incompatibilities & Reactivities
Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium
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Measurement Methods
NIOSH 1012; OSHA 7
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: No recommendation
Remove: When wet or contaminated
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 1000 ppm:
(APF = 10) Any supplied-air respirator
Up to 2000 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(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
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
In animals: irritation respiratory system; central nervous system symptoms; liver damage
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Target Organs
respiratory system, central nervous system, liver
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