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Sodium borohydride

Sodium borohydride
Names IUPAC name
Sodium tetrahydridoborate(1–)
Systematic IUPAC name
Sodium boranuide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.037.262EC Number
  • 241-004-4
23167 MeSHSodium+borohydride
RTECS number
  • ED3325000
UNII
UN number1426
  • InChI=1S/BH4.Na/h1H4;/q-1;+1
    Key: YOQDYZUWIQVZSF-UHFFFAOYSA-N
  • InChI=1S/BH4.Na/h1H4;/q-1;+1
  • Key: YOQDYZUWIQVZSF-UHFFF
  • [Na+].[BH4-]
Properties Na[BH4]Molar mass37.83 g·mol Appearance white crystals
hygroscopicDensity1.07 g/cm Melting point400 °C (752 °F; 673 K)(decomposes) 550 g/L Solubilitysoluble in liquid ammonia, amines, pyridineStructure Cubic (NaCl), cF8Fm3m, No. 225
a = 0.6157 nm
Thermochemistry 86.8 J·mol·K 101.3 J·mol·K −188.6 kJ·mol −123.9 kJ·mol Hazards GHS labelling: DangerH260, H301, H314, H360FP201, P231+P232, P280, P308+P313, P370+P378, P402+P404NFPA 704 (fire diamond)
3
1
2
W
Flash point70 °C (158 °F; 343 K) ca. 220 °C (428 °F; 493 K) Explosive limits3% Lethal dose or concentration (LD, LC): 160 mg/kg (Oral – Rat)
230 mg/kg (Dermal – Rabbit) Related compounds
Other anions
Sodium cyanoborohydride
Sodium hydride
Sodium borate
Borax
Sodium aluminum hydride
Other cations
Lithium borohydride
Potassium borohydride
Related compounds
Lithium aluminium hydride
Sodium triacetoxyborohydride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the formulaNaBH4 (sometimes written as Na[BH4]). It is a white crystalline solid, usually encountered as an aqueous basic solution. Sodium borohydride is a reducing agent that finds application in papermaking and dye industries. It is also used as a reagent in organic synthesis.

The compound was discovered in the 1940s by H. I. Schlesinger, who led a team seeking volatile uranium compounds. Results of this wartime research were declassified and published in 1953.

Wikipedia source