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Tellurium hexafluoride

Synonyms & Trade Names
Tellurium fluoride
CAS No.
7783-80-4
RTECS No.
WY2800000
DOT ID & Guide
2195 125
Formula
TeF₆
Conversion
1 ppm = 9.88 mg/m3
IDLH
1 ppm
See: 7783804
Exposure Limits
NIOSH REL
TWA 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 Weight
241.6
Boiling Point
Sublimes
Freezing Point
-36°F (Sublimes)
Solubility
Decomposes
Vapor Pressure
>1 atm
Ionization Potential
?
Flash Point
NA
Upper Exposive Limit
NA
Lower Explosive Limit
NA
Relative Gas Density
8.34
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 concern
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   MEDICAL TESTS: 0220

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