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455571

Sigma-Aldrich

Potassium borohydride

≥97%

Sinónimos:

Potassium tetrahydroborate

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About This Item

Fórmula lineal:
KBH4
Número de CAS:
13762-51-1
Peso molecular:
53.94
EC Number:
237-360-5
MDL number:
MFCD00011396
UNSPSC Code:
12352306
PubChem Substance ID:
24868580
NACRES:
NA.22

Quality Level

200

assay

≥97%

form

powder

reaction suitability

reagent type: reductant

mp

500 °C (dec.) (lit.)

density

1.18 g/mL at 25 °C (lit.)

SMILES string

[K+].[H][B-]([H])([H])[H]

InChI

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

InChI key

ICRGAIPBTSPUEX-UHFFFAOYSA-N

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Application

Potassium borohydride (KBH4) can be used as a reducing agent for the synthesis of:       
  • Copper nanoparticles by the reduction of copper salts.
  •  Enantioselective allylic alcohols by the catalytic reduction of enones and ketones in the presence of chiral N,N′-dioxidescandium(III) complex catalyst.,·        
  • Azoxybenzenes by the reduction of nitroarenes in the presence of phase transfer catalyst PEG-400.

It can also be employed as a boron source in the nickel–boron alloy, which is electrodeposited on carbon fiber to improve catalytic graphitization of carbon.

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

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Catalytic graphitization of carbon fibers with electrodeposited Ni-B alloy coating
Zhou H, et al.
Materials Chemistry and Physics, 110(2-3), 434-439 (2008)
Peng He et al.
Organic letters, 14(19), 5134-5137 (2012-09-28)
The first catalytic enantioselective 1,2-reduction of enones with 0.45 mol equiv potassium borohydride solution catalyzed by a chiral N,N'-dioxide-Sc(III) complex catalyst was accomplished under mild reaction conditions. A number of optically active allylic alcohols were obtained in good to excellent
Preparation of copper nanoparticles by chemical reduction method using potassium borohydride
Zhang Q-L, et al.
Transactions of Nonferrous Metals Society of China, 20, 240-s244-240-s244 (2010)
A P Seddon et al.
The Journal of biological chemistry, 261(25), 11538-11543 (1986-09-05)
Bacterial 5-oxoprolinase is composed of two protein components: Component A, which catalyzes 5-oxoproline-dependent ATP-hydrolysis and Component B, which couples the hydrolysis of ATP with the decyclization of 5-oxoproline to form glutamate (Seddon, A. P., Li, L., and Meister, A. (1984)
G A Francis et al.
Biochemistry, 19(22), 5104-5111 (1980-10-28)
Reduction with [3H]KBH4 of Schiff's bases generated by reaction with pyridoxal 5'-phosphate (which cannot penetrate the intact cytoplasmic membrane) yields tritium-labeled derivatives of both proteins and lipids accessible on the periplasmic side of the cytoplasmic membrane. Application of this technique
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