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Difluorodibromomethane																				Related Pages
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 ppmSee: 75616

Exposure Limits
			NIOSH RELTWA 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.													
										
Molecular Weight209.8	
	Boiling Point76°F
	Freezing Point-231°F
	SolubilityInsoluble
	Vapor Pressure620 mmHg
	Ionization Potential11.07 eV											
Specific Gravity(59°F): 2.29	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
Noncombustible LiquidNonflammable 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
										
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
	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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 1419

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
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