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|IUPAC name||hydrogen telluride|
|Other names|| hydrotelluric acid|
|Molar mass||129.6158 g mol−1|
|Density|| 3.310 g/cm3, gas |
2.57 g/cm3 (-20 °C, liquid)
−49 °C (224 K) ( 
−2.2 °C (271.8 K)(unstable above -2 °C)
|Solubility in water||0.70 g/100 mL|
| Std enthalpy of
|Other anions|| H2O|
|Other cations|| Na2Te|
|Related compounds|| telluric acid |
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)|
Hydrogen telluride is a toxic reactive gas. It easily decomposes to hydrogen and tellurium. It also burns in air to make tellurium dioxide and water. It has a very bad smell of decayed garlic. It is almost as acidic as phosphoric acid. It reacts with some metals and metal oxides to make tellurides.
It is made by adding a strong acid to a telluride, such as sodium telluride.
Hydrogen telluride does not have many uses because it is very toxic and unstable.