Lead telluride
| Names | |
|---|---|
| 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). | |
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| Infobox references | |
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.
Properties[change | change source]
Lead telluride is a gray crystalline solid. It reacts with strong acids to make toxic hydrogen telluride and toxic lead salts.
Preparation[change | change source]
It may be made by melting lead and tellurium together.
Uses[change | change source]
It is used as a semiconductor and an infrared detector.
Related pages[change | change source]
References[change | change source]
- ↑ 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.