Chemistry:Strontium hydride
From HandWiki
| Names | |
|---|---|
| IUPAC name
Strontium hydride
| |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| EC Number |
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PubChem CID
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| UN number | 1409[1] |
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| Properties | |
| SrH 2 | |
| Molar mass | 89.64 g·mol−1 |
| Appearance | white crystal |
| reacts (produces hydrogen gas and strontium hydroxide | |
| Vapor pressure | 8 mmHg (1.1 kPa) (99% purity, 700 °C (1,292 °F)) |
| Hazards | |
| GHS pictograms |  
|
| GHS Signal word | Danger |
| H228, H260, H314 | |
| P101, P102, P103, P231+232, P303+361+353, P305+351+338, P403+233, P422, P501 | |
| Related compounds | |
Other cations
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Strontium hydride is an inorganic compound with a chemical formula SrH
2.
Preparation
Strontium hydride can be prepared by combining strontium and hydrogen:[2]
- Sr + H
2 → SrH
2
This reaction must be performed in oxygen free conditions. Optimal yields (99%+) were only achieved with redistilled strontium at temperatures between 200 and 250 °C (392 and 482 °F) using hydrogen prepared electrolytically, with all oxygen catalytically removed, and dried by passing through phosphorus pentoxide (P
2O
5).[2]
Strontium hydride reacts with water and produces hydrogen and strontium hydroxide:
- SrH
2 + 2 H
2O → 2 H
2 + Sr(OH)
2
References
- ↑ 1.0 1.1 "SDS - Strontium hydride 99.5%". Newburyport, MA: STREM Chemicals, Inc.. 17 July 2021. https://sds.strem.com/sd38-3840_GB.pdf.
- ↑ 2.0 2.1 Häuptli, Gerard (1957). Ueber die Reindarstellung von Strontium und Strontiumhydrid und die Bestimmung des Dissoziationsdruckes des Hydrides [On the Preparation of Pure Strontium and Strontium Hydride and the Determination of the Dissociation Pressure of the Hydride] (pdf) (PhD thesis) (in Deutsch). ETH Zurich. pp. 33–34. doi:10.3929/ethz-a-000096715. hdl:20.500.11850/134376.
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