Sodium borohydride powder

Sodium borohydride powder

CAS Number:16940‑66‑2

Synonyms:Sodium borohydride; Sodium tetrahydroborate

Chemical Formula:NaBH₄

Molecular Weight: 37.83 g/mol

Product Introduction

White to gray-white odorless microcrystalline powder. A powerful, selective reducing agent used in pharmaceutical synthesis, organic chemistry, metal hydride generation, and paper bleaching. Sensitive to moisture and acids.

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Physical & Chemical Properties

Property Value
Appearance White to gray-white powder/crystals
Melting Point >300 °C (decomposes)
Density ~1.07–1.33 g/cm³
Solubility Water: 56 g/100 mL @25 °C; methanol: 13 g; ethanol: 3.1 g; insoluble in ethers
Stability Decomposes in acid/neutral pH; stable at pH 14
Vapor Pressure <1 hPa @ 25 °C

Applications

  • Organic synthesis: reduction of aldehydes/ketones to alcohols; selective, mild
  • Pharmaceuticals: antibiotic, vitamin, steroid synthesis
  • Industrial: production of sodium dithionite (bleaching); fuel cell hydrogen generation; pulp bleaching
  • Research: nanoparticle synthesis, catalytic hydrogenation

Safety & Handling:

  • Highly reactive and flammable, especially with water/acids – releases H₂ gas. Corrosive; irritant; potential mutagen. GHS: H260, H314. Use gloves, goggles, inert-atmosphere fume hood. Store under dry inert gas.

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