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8.06373

Sigma-Aldrich

Sodium borohydride

fine granular for synthesis

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Synonym(s):
Sodium borohydride, Sodium tetrahydridoborate
Empirical Formula (Hill Notation):
H4BNa
CAS Number:
16940-66-2
Molecular Weight:
37.83
MDL number:
MFCD00003518
UNSPSC Code:
12352306
EC Index Number:
241-004-4
NACRES:
NA.22

vapor pressure

<1 hPa ( 25 °C)

Quality Level

200

form

solid

autoignition temp.

220 °C

potency

160 mg/kg LD50, oral (Rat)
230 mg/kg LD50, skin (Rabbit)

expl. lim.

3.02 % (v/v)

reaction suitability

reagent type: reductant

pH

11 (20 °C, 10 g/L in H2O)

bp

500 °C (decomposition)

mp

>360 °C (slow decomposition)

transition temp

flash point 69 °C

density

1.07 g/cm3 at 20 °C

bulk density

350‑500 kg/m3

storage temp.

2-30°C

InChI

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

InChI key

YOQDYZUWIQVZSF-UHFFFAOYSA-N

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General description

Sodium borohydride (NaBH4) is the most commonly available borohydride used in several industrial applications. It 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. Ethanol and methanol are usually employed as solvents in NaBH4 reduction reactions.

Application

Sodium borohydride (fine granular) can be used as a reducing agent to prepare:
  • Zero valent iron nanoparticles supported on mesoporous carbon (Starbon) by in situ reductions of Fe3+ ions.
  • Ag nanoparticles on graphene using AgNO3 as a precursor.
  • Ag-Pd/ZrO2 catalytic system applicable in plasmonic catalysis. It can also be used as a source to store as well as generate hydrogen for energy-carrier applications.

Analysis Note

Assay (hypochlorite): ≥ 98.0 %
Identity (ICP-OES): passes test

Signal Word

Danger

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

Regulatory Information

监管及禁止进口产品

Certificates of Analysis (COA)

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Sodium Borohydride
Banfi Luca, et al.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2014)
Hydrogen production from solid sodium borohydride
Gislon P, et al.
International Journal of Hydrogen Energy, 34(2), 929-937 (2009)
Erandi Peiris et al.
Journal of visualized experiments : JoVE, (162) (2020-09-08)
Localized surface plasmon resonance (LSPR) in plasmonic nanoparticles (NPs) can accelerate and control the selectivity of a variety of molecular transformations. This opens possibilities for the use of visible or near-IR light as a sustainable input to drive and control
Synthesis and characterization of robust zero valent iron/mesoporous carbon composites and their applications in arsenic removal
Baikousi M, et al.
Carbon, 93, 636-647 (2015)

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