NIOSH Pocket Guide to Chemical Hazards

Tellurium hexafluoride CAS 7783-80-4
TeF6 RTECS WY2800000
Synonyms & Trade Names
Tellurium fluoride
DOT ID & Guide
2195 125
NIOSH REL: TWA 0.02 ppm (0.1 mg/m3)
OSHA PEL: TWA 0.02 ppm (0.2 mg/m3)
IDLH 1 ppm Conversion 1 ppm = 9.88 mg/m3
Physical Description
Colorless gas with a repulsive odor. MW: 241.6

BP: Sublimes
FRZ: -36°F (Sublimes)
Sol: Decomposes
VP: >1 atm
IP: ?
RGasD: 8.34

Fl.P: NA

Nonflammable Gas
Incompatibilities & Reactivities
Water [Note: Hydrolyzes slowly in water to telluric acid.]
Measurement Methods
NIOSH S187 (II-3)
Personal Protection & Sanitation
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
Exposure Routes inhalation
Symptoms Headache; dyspnea (breathing difficulty); garlic breath; in animals: pulmonary edema
Target Organs respiratory system