452882

Sodium borohydride

powder, ≥98.0%

• Synonym(s): Sodium tetrahydridoborate
• Linear Formula: NaBH₄
• CAS Number: 16940-66-2
• Molecular Weight: 37.83
• EC Number: 241-004-4
• MDL number: MFCD00003518
• UNSPSC Code: 12352302
• PubChem Substance ID: 57650269
• NACRES: NA.22

Properties

• Quality Level: 300
• Assay: ≥98.0%
• form: powder
• contains: 0.45-0.70% Magnesium carbonate as anticaking agent
• reaction suitability: reagent type: reductant
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• impurities: ≤100 ppm Silica
• mp: >300 °C (dec.) (lit.)
• cation traces: Fe: ≤5 ppm
• greener alternative category: , Enabling
• SMILES string: [BH4-].[Na+]
• InChI: 1S/BH4.Na/h1H4;/q-1;+1
• InChI key: YOQDYZUWIQVZSF-UHFFFAOYSA-N

Description

General description

Sodium borohydride (NaBH₄) is the most commonly available borohydride, synthesized by reacting methylborate with sodium hydride in mineral oil. It is employed as a precursor for producing other metal borohydrides. Various approaches for qualitative and quantitative monitoring of sodium borohydride have been explained. The potential of NaBH₄ to store as well as generate hydrogen for fuel cells has been investigated.

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Application

Sodium borohydride can be used as a reducing agent:        

• To prepare saturated alcohols by the reduction of conjugated aldehydes and ketones.        
• Along with Raney nickel for the reduction of aromatic nitro compounds to arylamines.        
• In the synthesis of secondary amines by reductive amination of ketones and aldehydes in the presence of an acid catalyst.       
• In the synthesis of δ and γ lactones by the reduction of cyclic anhydrides.       
• For the chemoselective reduction of N -protected amino acids and peptides to corresponding alcohols.

Legal Information

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Safety Information

• Pictograms: GHS02,GHS05,GHS06,GHS08
• Signal Word: Danger
• Hazard Statements: H260 - H301 - H314 - H360FD
• Precautionary Statements: P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1B - Water-react 1
• Supplementary Hazards: EUH014
• Storage Class Code: 4.3 - Hazardous materials, which set free flammable gases upon contact with water
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves