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Merck

455571

Sigma-Aldrich

Kaliumborhydrid

≥97%

Synonym(e):

Potassium tetrahydroborate

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About This Item

Lineare Formel:
KBH4
CAS-Nummer:
Molekulargewicht:
53.94
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352306
PubChem Substanz-ID:
NACRES:
NA.22

Qualitätsniveau

Assay

≥97%

Form

powder

Eignung der Reaktion

reagent type: reductant

mp (Schmelzpunkt)

500 °C (dec.) (lit.)

Dichte

1.18 g/mL at 25 °C (lit.)

SMILES String

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

InChI

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

InChIKey

ICRGAIPBTSPUEX-UHFFFAOYSA-N

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Anwendung

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.

Signalwort

Danger

Gefahreneinstufungen

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

Lagerklassenschlüssel

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

WGK

nwg

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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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)
Chuan Zhang et al.
Analytica chimica acta, 652(1-2), 143-147 (2009-09-30)
Room-temperature ionic liquid in combination with sodium diethyldithiocarbamate (DDTC) was used to synergetically improve the chemical vapor generation (CVG) of nickel. Volatile species of nickel were effectively generated through reduction of acidified analyte solution with KBH(4) in the presence of

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