Sodium hydride
| Sodium hydride | |
|---|---|
| Identifiers | |
| InChI | InChI=1/Na.H/q+1;-1 |
| InChIKey | BZKBCQXYZZXSCO-UHFFFAOYAY |
| Standard InChI | InChI=1S/Na.H |
| Standard InChIKey | MPMYQQHEHYDOCL-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | NaH |
| Molar mass | 23.998 g mol–1 |
| Appearance | white to grey solid |
| Density | 0.92 g cm–1 |
| Melting point |
800 °C decomp. |
| Solubility in water | reacts |
| Refractive index (nD) | 1.470 |
| Structure[2] | |
| Crystal structure | Halite (NaCl), cF8 |
| Space group | Fm3m, No. 225 |
| Lattice constant | a = 496 pm |
| Coordination geometry | Octahedral (Na+) Octahedral (H–) |
| Thermochemistry[3] | |
| Std enthalpy of formation ΔfH |
–56.44 kJ mol–1 |
| Standard molar entropy S |
40.03 J K–1 mol–1 |
| Hazards[4] | |
| EU index number | 001-003-00-X |
| GHS pictograms | 
|
| GHS signal word | DANGER |
| GHS hazard statements | H260 |
| Related compounds | |
| Other cations | Lithium hydride Potassium hydride Rubidium hydride Caesium hydride |
| Other compounds | Lithium aluminium hydride Sodium borohydride |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Sodium hydride, NaH, is an ionic (or "saline") hydride. It is used as a strong reducing agent and/or a strong base in organic synthesis.
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-148. ISBN 0-8493-0462-8.
- ↑ Wells, A. F. Structural Inorganic Chemistry, 5th ed.; Clarendon Press: Oxford, 1984. ISBN 0-19-855370-6.
- ↑ Sodium hydride. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/Na.H>. (accessed 20 June 2010).
- ↑ Index no. 001-002-00-4 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 340.
External links
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See also the corresponding article on Wikipedia. |
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