Bismuth telluride , 99.99%metalsbasis , 1304-82-1

Synonym(s):
Bismuth sesquitelluride;Bismuth telluride;Dibismuth tritelluride

CAS NO.：1304-82-1

Empirical Formula: Bi2Te3

Molecular Weight: 800.76

MDL number: MFCD00014201

EINECS: 215-135-2

PRODUCT Properties

• Melting point: 585 °C(lit.)
• Boiling point: 1172 °C
• Density: 7.642 g/mL at 25 °C(lit.)
• solubility: insoluble in H2O; soluble in ethanol
• form: Powder
• color: Gray
• Water Solubility: Insoluble in water.
• Sensitive: Moisture Sensitive
• Crystal Structure: Cubic, Halite Structure - Space Group Fm3m
• Exposure limits: ACGIH: TWA 10 mg/m3; TWA 5 mg/m3; TWA 0.1 mg/m3; OSHA: TWA 15 mg/m3; TWA 5 mg/m3; NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; TWA 10 mg/m3; TWA 0.1 mg/m3
• InChIKey: GUYIRKJSQUOSJV-UHFFFAOYSA-N

Description and Uses

Bismuth telluride is a gray crystalline solid.Molecular weight=800.83; Specific gravity (H2O:1)=7.7;Freezing/Melting point=573℃; Vapor pressure=0 mmHgat 20℃. Hazard Identification (based on NFPA-704 MRating System): Health 2, Flammability 2, Reactivity 2.Note: Commercial mix of doped bismuth tritelluride maycontain 80% Bi2Te3, 20% stannous telluride, plus some tellurium. Insoluble in water. Doped and undoped have similarphysical properties.

Bi2Te3, along with Sb2Te3 and other structurally analogous semiconductors, is widely regarded as one of the best materials for room-temperature thermoelectric devices. Bismuth(III) telluride is a key component of thermoelectric materials that have reached ZT values as high as 2.4 at room temperature.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302+H312+H332-H315-H319-H335
• Precautionary statements: P261-P280-P301+P312-P302+P352+P312-P304+P340+P312-P305+P351+P338
• Hazard Codes: Xn
• Risk Statements: 20/21/22-36/37/38
• Safety Statements: 26-36
• RIDADR: UN 3284 6.1/PG 3
• OEB: B
• OEL: TWA: 10 mg/m3 (total)
• WGK Germany: 3
• RTECS: EB3110000
• TSCA: Yes
• HazardClass: 6.1