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452882

Sodium borohydride

Name: Sodium borohydride
Brand: ALDRICH

powder, ≥98.0%

Synonym(s):

Sodium tetrahydridoborate

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About This Item

Linear Formula:

NaBH₄

CAS Number:

16940-66-2

Molecular Weight:

37.83

NACRES:

NA.22

PubChem Substance ID:

57650269

UNSPSC Code:

12352302

EC Number:

241-004-4

MDL number:

MFCD00003518

Assay:

≥98.0%

Form:

powder

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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

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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

ASCENSUS SPECIALTIES LLC

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pictograms

GHS02,GHS06,GHS08,GHS05

signalword

Danger

Storage Class

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

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Hazard Classifications

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

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