# 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
Exposure Limits | 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 | UEL: NA | LEL: 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
See also: INTRODUCTION