Lead telluride
chemical compound
Lead telluride, also known as lead(II) telluride, is a chemical compound. Its chemical formula is PbTe. It contains lead and telluride ions. The lead is in the +2 oxidation state.
Names | |
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Other names
Lead(II) telluride
Altaite | |
Identifiers | |
ECHA InfoCard | 100.013.862 |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
PbTe | |
Molar mass | 334.80 g/mol |
Appearance | gray cubic crystals. |
Density | 8.164 g/cm3 |
Melting point | 924 °C (1,695 °F; 1,197 K) |
insoluble | |
Band gap | 0.25 eV (0 K) 0.32 eV (300 K) |
Electron mobility | 1600 cm2 V−1 s−1 (0 K) 6000 cm2 V−1 s−1 (300 K) |
Structure | |
Halite (cubic), cF8 | |
Fm3m, No. 225 | |
a = 6.46 Angstroms
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Octahedral (Pb2+) Octahedral (Te2−) | |
Thermochemistry | |
Std enthalpy of formation ΔfH |
-70.7 kJ·mol−1 |
Std enthalpy of combustion ΔcH |
110.0 J·mol−1·K−1 |
Standard molar entropy S |
50.5 J·mol−1·K−1 |
Hazards | |
EU classification | Repr. Cat. 1/3 Harmful (Xn) Dangerous for the environment (N) |
R-phrases | R61, R20/22, R33, R62, R50/53 |
S-phrases | S53, S45, S60, S61 |
Flash point | Non-flammable |
Related compounds | |
Other anions | Lead(II) oxide Lead(II) sulfide Lead selenide |
Other cations | Carbon monotelluride Silicon monotelluride Germanium telluride Tin telluride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
verify (what is ?) | |
Infobox references | |
Properties change
Lead telluride is a gray crystalline solid. It reacts with strong acids to make toxic hydrogen telluride and toxic lead salts.
Preparation change
It may be made by melting lead and tellurium together.
Uses change
It is used as a semiconductor and an infrared detector.
Related pages change
References change
- ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–65, ISBN 978-0-8493-0594-8
- ↑ CRC Handbook, pp. 5–24.
- ↑ Lawson, William D (1951). "A method of growing single crystals of lead telluride and selenide". J. Appl. Phys. 22 (12): 1444–1447. doi:10.1063/1.1699890.