# NIOSH Pocket Guide to Chemical Hazards
Bismuth telluride, undoped | CAS 1304-82-1
Bi2Te3 | RTECS EB3110000
Synonyms & Trade Names Bismuth sesquitelluride, Bismuth telluride, Bismuth tritelluride, Tellurobismuthite | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH N.D. | Conversion
Physical Description Gray, crystalline solid.
MW: 800.8 | BP: ? | MLT: 1063°F | Sol: Insoluble
VP: 0 mmHg (approx) | IP: NA |  | Sp.Gr: 7.7
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid
Incompatibilities & Reactivities Strong oxidizers (e.g., bromine, chlorine, or fluorine), moisture, nitric acid (decomposes)
Measurement Methods NIOSH 0500, 0600; 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
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION