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Chlorine trifluoride																				Related Pages
Synonyms & Trade Names
			Chlorine fluoride, Chlorotrifluoride
CAS No.
			7790-91-2
	RTECS No.
			FO2800000
	DOT ID & Guide
			1749 124

FormulaClF3
	Conversion
			1 ppm = 3.78 mg/m3
	IDLH
			12 ppmSee: 2020-124

Exposure Limits
			NIOSH RELC 0.1 ppm (0.4 mg/m3)
					OSHA PEL C 0.1 ppm (0.4 mg/m3)
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas or a greenish-yellow liquid (below 53°F) with a somewhat sweet, suffocating odor.
					[Note: Shipped as a liquefied compressed gas.]													
										
Molecular Weight92.5	
	Boiling Point53°F
	Freezing Point-105°F
	SolubilityReacts
	Vapor Pressure1.4 atm
	Ionization Potential13.00 eV											
Specific Gravity1.77 (Liquid at 53°F)	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
	Relative Gas Density3.21
Nonflammable Gas Noncombustible Liquid, but contact with organic materials may result in SPONTANEOUS ignition.
Incompatibilities & Reactivities
			Oxidizers, water, acids, combustible materials, sand, glass, metals (corrosive)
					[Note: Reacts with water to form chlorine & hydrofluoric acid.]
Exposure Routes
			inhalation, ingestion (liquid), skin and/or eye contact
Symptoms
			Eye, skin burns (liquid or high vapor concentration); resp irritation; In Animals: lacrimation (discharge of tears), corneal ulcer; pulmonary edema
Target Organs
			Skin, eyes, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**Prevent eye contact
							**Wash skin:**When contaminated (liquid)
							**Remove:**When wet or contaminated (liquid)
							**Change:**No recommendation
							**Provide:**Eyewash (liquid), Quick drench (liquid)
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water flush immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately (liquid)
Respirator Recommendations
			**NIOSH/OSHA****Up to 2.5 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£**Up to 5 ppm**: (APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator with a full facepiece**Up to 20 ppm**: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
**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: 0656
					  MEDICAL TESTS: 0046

			
							

			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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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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