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Tellurium hexafluoride																				Related Pages
Synonyms & Trade Names
			Tellurium fluoride
CAS No.
			7783-80-4
	RTECS No.
			WY2800000
	DOT ID & Guide
			2195 125

FormulaTeF6
	Conversion
			1 ppm = 9.88 mg/m3
	IDLH
			1 ppmSee: 7783804

Exposure Limits
			NIOSH RELTWA 0.02 ppm (0.2 mg/m3)
					OSHA PEL TWA 0.02 ppm (0.2 mg/m3)
	Measurement Methods
			**NIOSH** S187 (II-3)
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with a repulsive odor.													
										
Molecular Weight241.6	
	Boiling PointSublimes
	Freezing Point-36°F (Sublimes)
	SolubilityDecomposes
	Vapor Pressure>1 atm
	Ionization Potential?											
Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
	Relative Gas Density8.34
Nonflammable Gas
Incompatibilities & Reactivities
			Water
					[Note: Hydrolyzes slowly in water to telluric acid.]
Exposure Routes
			inhalation
Symptoms
			headache; dyspnea (breathing difficulty); garlic breath; In Animals: pulmonary edema
Target Organs
			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)**Breathing:**Respiratory support
Respirator Recommendations
			**NIOSH/OSHA****Up to 0.2 ppm**: (APF = 10) Any supplied-air respirator**Up to 0.5 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode**Up to 1 ppm**: (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is 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
					
					  MEDICAL TESTS: 0220

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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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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