Difluorodibromomethane |
Synonyms & Trade Names Dibromodifluoromethane, Freon® 12B2, Halon® 1202 |
CAS No. 75-61-6 |
RTECS No. PA7525000 |
DOT ID & Guide 1941 171 |
FormulaCBr2F2 |
Conversion 1 ppm = 8.58 mg/m3 |
IDLH 2000 ppm
See: 75616 |
Exposure Limits NIOSH REL: TWA 100 ppm (860 mg/m3)
OSHA PEL: TWA 100 ppm (860 mg/m3) |
Measurement Methods
NIOSH 1012;
OSHA 7
See: NMAM or OSHA Methods |
Physical Description Colorless, heavy liquid or gas (above 76°F) with a characteristic odor. |
MW: 209.8 |
BP: 76°F |
FRZ: -231°F |
Sol: Insoluble |
VP: 620 mmHg |
IP: 11.07 eV |
| Sp.Gr(59°F): 2.29 |
Fl.P: NA |
UEL: NA |
LEL: NA |
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Noncombustible Liquid
Nonflammable Gas |
Incompatibilities & Reactivities Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms In animals: irritation respiratory system; central nervous system symptoms; liver damage |
Target Organs respiratory system, central nervous system, liver |
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Personal Protection/Sanitation (See protection codes)
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 |
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 |
| See also: INTRODUCTION See ICSC CARD: 1419
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