71320

Sigma-Aldrich

Sodium borohydride

purum p.a., ≥96% (gas-volumetric)

Synonym(s):
Sodium tetrahydridoborate
Linear Formula:
NaBH4
CAS Number:
Molecular Weight:
37.83
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

grade

purum p.a.

assay

≥96% (gas-volumetric)

reaction suitability

reagent type: reductant

mp

>300 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤5000 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤1000 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

[BH4-].[Na+]

InChI

1S/BH4.Na/h1H4;/q-1;+1

InChI key

YOQDYZUWIQVZSF-UHFFFAOYSA-N

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General description

Sodium borohydride is considered as a selective reducing agent due to its ability to selectively reduce aldehydes and ketones into their corresponding alcohols in the presence of other functional groups such as nitro, ester, amide, lactone, epoxide, and nitriles that are otherwise susceptible to reduction. It is being considered as a promising candidate for hydrogen storage applications.

Application

Sodium borohydride may be used as a reductant and hydrogen source for the semi-hydrogenation of alkynes to the corresponding alkenes in the presence of nickel nanoparticles generated in situ from nickel chloride and methanol. It can also be used as a reducing agent for the synthesis of gold nanoparticles from gold chloride.

Other Notes

Reduction of carboxylic acid derivatives

signalword

Danger

hazcat

Acute Tox. 3 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1B - Water-react. 1

Supp Hazards

EUH014

storage_class_code

4.3 - Hazardous materials, which set free flammable gases upon contact with water

WGK Germany

WGK 2

Flash Point F

156.2 °F

Flash Point C

69 °C

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

hemoselective reductions with sodium borohydride.
Ward D
Canadian Journal of Chemistry, 67(7), 1206-1211 (1989)
Ligand-free nickel-catalyzed semihydrogenation of alkynes with sodium borohydride: a highly efficient and selective process for cis-alkenes under ambient conditions.
Wen X
Chemical Communications (Cambridge, England), 53(39), 5372-5375 (2017)
Thermo-economic analysis of a hydrogen production system by sodium borohydride (NaBH 4).
Rivarolo M
International Journal of Hydrogen Energy, 43(3), 1606-1614 (2018)
G.W. Gribble et al.
Organic preparations and procedures international, 17, 317-317 (1985)
Synthesis of thiol-derivatised gold nanoparticles in a two-phase liquid?liquid system.
Brust M
Journal of the Chemical Society. Chemical Communications, 7, 801-802 (1994)

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