# NIOSH Pocket Guide to Chemical Hazards
Bismuth telluride, doped with Selenium sulfide (as Bi2Te3) | CAS
| RTECS
Synonyms & Trade Names Doped bismuth sesquitelluride, Doped bismuth telluride, Doped bismuth tritelluride, Doped tellurobismuthite [Note: Doped with selenium sulfide. Commercial mix may contain 80% Bi2Te3, 20% stannous telluride, plus some tellurium.] | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 5 mg/m3
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Gray, crystalline solid that has been enhanced (doped) with a small amount of selenium sulfide (SeS). [Note: Doping alters the conductivity of a semiconductor.]
Properties are unavailable but should be similar to Bismuth telluride, undoped. |  |  |
|  |  | Sp.Gr: ?
Noncombustible Solid
Incompatibilities & Reactivities Strong oxidizers, moisture
Measurement Methods NIOSH 0500; OSHA ID121
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin and/or eye contact
Symptoms Irritation eyes, skin, upper respiratory system; garlic breath; in animals: pulmonary lesions (nonfibrotic)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION