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Merck

455571

Sigma-Aldrich

Kaliumborhydrid

≥97%

Synonym(e):

Potassium tetrahydroborate

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100 G
€ 85,90
500 G
€ 148,00
2 KG
€ 423,00

€ 85,90


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100 G
€ 85,90
500 G
€ 148,00
2 KG
€ 423,00

About This Item

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

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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.[1]
  •  Enantioselective allylic alcohols by the catalytic reduction of enones and ketones in the presence of chiral N,N′-dioxidescandium(III) complex catalyst.[2],·        
  • Azoxybenzenes by the reduction of nitroarenes in the presence of phase transfer catalyst PEG-400.[3]

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.[4]

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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Kunden haben sich ebenfalls angesehen

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)
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)
S. Yan and S. Zhang,
International Journal of Hydrogen Energy, 36, 13392-13397 (2011)
A. Yin, et al.,
Applied Catalysis, 400, 39-47 (2011)
Gang Lian et al.
Dalton transactions (Cambridge, England : 2003), 40(26), 6961-6967 (2011-06-07)
Cubic boron nitride (cBN) is synthesized by a low-temperature solid state synthesis and in situ phase transformation route with NH(4)BF(4), B, NaBH(4) and KBH(4) as the boron sources and NaN(3) as the nitrogen source. Furthermore, two new strategies are developed

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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