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71320

Sigma-Aldrich

Sodium borohydride

purum p.a., ≥96% (gas-volumetric)

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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:
26111700
PubChem Substance ID:
57652284
NACRES:
NA.22

grade

purum p.a.

Quality Level

200

Assay

≥96% (gas-volumetric)

form

powder

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

Signal Word

Danger

Hazard Statements

H260,H301,H314,H360FD

Hazard Classifications

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

Supplementary Hazards

EUH014

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

监管及禁止进口产品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
G.W. Gribble
ACS Symp. Ser., 641, 167-167 (1996)
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)
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)
hemoselective reductions with sodium borohydride.
Ward D
Canadian Journal of Chemistry, 67(7), 1206-1211 (1989)
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