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Sodium borohydride

Names IUPAC nameSodium tetrahydridoborate(1–)Systematic IUPAC nameSodium boranuideIdentifiers CAS Number16940-66-215681-89-7 (D4)3D model (JSmol)Interactive imageChEBICHEBI:50985ChemSpider261899052313 (D4)9312193 (T4)ECHA InfoCard100.037.262EC Number241-004-4Gmelin Reference23167 MeSHSodium+borohydridePubChemCID431176423673181 (D4)23671303 (T4)RTECS numberED3325000UNII87L0B9CPPAUN number1426 CompTox Dashboard(EPA)DTXSID80893977InChIInChI=1S/BH4.Na/h1H4;/q-1;+1Key: YOQDYZUWIQVZSF-UHFFFAOYSA-NInChI=1S/BH4.Na/h1H4;/q-1;+1Key: YOQDYZUWIQVZSF-UHFFFSMILES[Na+].[BH4-]Properties Chemical formulaNa[BH4]Molar mass37.83 g·mol Appearance white crystals hygroscopicDensity1.07 g/cm Melting point400 °C (752 °F; 673 K)(decomposes) Solubility in water550 g/L Solubilitysoluble in liquid ammonia, amines, pyridineStructure Crystal structureCubic (NaCl), cF8Space groupFm3m, No. 225 Lattice constanta = 0.6157 nmThermochemistry Heat capacity(C)86.8 J·mol K Std molarentropy(S298)101.3 J·mol K Std enthalpy offormation(ΔfH298)−188.6 kJ mol Gibbs free energy(ΔfG)−123.9 kJ mol Hazards GHS labelling: PictogramsSignal wordDangerHazard statementsH260, H301, H314, H360FPrecautionary statementsP201, P231+P232, P280, P308+P313, P370+P378, P402+P404NFPA 704 (fire diamond) 312WFlash point70 °C (158 °F; 343 K) Autoignitiontemperatureca.

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