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Oxygen difluoride																				Related Pages
Synonyms & Trade Names
			Difluorine monoxide, Fluorine monoxide, Oxygen fluoride
CAS No.
			7783-41-7
	RTECS No.
			RS2100000
	DOT ID & Guide
			2190 124

FormulaOF2
	Conversion
			1 ppm = 2.21 mg/m3
	IDLH
			0.5 ppmSee: 7783417

Exposure Limits
			NIOSH RELC 0.05 ppm (0.1 mg/m3)
					OSHA PEL TWA 0.05 ppm (0.1 mg/m3) See Appendix G
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with a peculiar, foul odor.
					[Note: Shipped as a nonliquefied compressed gas.]													
										
Molecular Weight54.0	
	Boiling Point-230°F
	Freezing Point-371°F
	Solubility0.02%
	Vapor Pressure>1 atm
	Ionization Potential13.11 eV											
Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
	Relative Gas Density1.88
Nonflammable Gas, but a strong oxidizer.
Incompatibilities & Reactivities
			Combustible materials, chlorine, bromine, iodine, platinum, metal oxides, moist air, hydrogen sulfide, hydrocarbons, water
					[Note: Reacts very slowly with water to form hydrofluoric acid.]
Exposure Routes
			inhalation, skin and/or eye contact
Symptoms
			irritation eyes, skin, respiratory system; headache; pulmonary edema; eye, skin burns (from contact with the gas under pressure)
Target Organs
			Eyes, skin, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**No recommendation
							**Eyes:**No recommendation
							**Wash skin:**No recommendation
							**Remove:**No recommendation
							**Change:**No recommendation
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water flush immediately
							**Breathing:**Respiratory support
Respirator Recommendations
			**NIOSH/OSHA****Up to 0.5 ppm**: (APF = 10) Any supplied-air respirator(APF = 50) Any self-contained breathing apparatus 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 canister providing protection against the compound of concern¿Any appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0818
					  MEDICAL TESTS: 0171

			
							

			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
Personal Protection and Sanitation Codes
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