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Boron trifluoride																				Related Pages
Synonyms & Trade Names
			Boron fluoride, Trifluoroborane
CAS No.
			7637-07-2
	RTECS No.
			ED2275000
	DOT ID & Guide
			1008 125

FormulaBF3
	Conversion
			1 ppm = 2.77 mg/m3
	IDLH
			25 ppmSee: 7637072

Exposure Limits
			NIOSH RELC 1 ppm (3 mg/m3)
					OSHA PEL C 1 ppm (3 mg/m3)
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with a pungent, suffocating odor.
					[Note: Forms dense white fumes in moist air. Shipped as a nonliquefied compressed gas.]													
										
Molecular Weight67.8	
	Boiling Point-148°F
	Freezing Point-196°F
	Solubility106% (in cold H2O)
	Vapor Pressure>50 atm
	Ionization Potential15.50 eV											
Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
	Relative Gas Density2.38
Nonflammable Gas
Incompatibilities & Reactivities
			Alkali metals, calcium oxide
					[Note: Hydrolyzes in moist air or hot water to form boric acid, hydrogen fluoride & fluoboric acid.]
Exposure Routes
			inhalation, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, respiratory system; epistaxis (nosebleed); eye, skin burns; In Animals: pneumonitis; kidney damage
Target Organs
			Eyes, skin, respiratory system, kidneys
										
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 10 ppm**: (APF = 10) Any supplied-air respirator***Up to 25 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 canister providing protection against the compound of concernAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0231

			
							

			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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