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222356

Sigma-Aldrich

Lithium borohydride

greener alternative

≥90%

Sinônimo(s):

Lithium boron hydride, Lithium hydroborate

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About This Item

Fórmula linear:
LiBH4
Número CAS:
Peso molecular:
21.78
Número CE:
Número MDL:
Código UNSPSC:
26111700
ID de substância PubChem:
NACRES:
NA.22

Nível de qualidade

Ensaio

≥90%

Formulário

solid

adequação da reação

reagent type: reductant

características do produto alternativo mais ecológico

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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pf

275 °C (dec.)

densidade

0.666 g/mL at 25 °C (lit.)

categoria alternativa mais ecológica

cadeia de caracteres SMILES

[Li+].[BH4-]

InChI

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

chave InChI

UUKMSDRCXNLYOO-UHFFFAOYSA-N

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Descrição geral

Lithium borohydride, a white solid, may be prepared from the exchange reaction of LiCl and sodium borohydride in isopropylamine. The orthorhombic crystal structure converts to tetragonal at 108oC and eventually melting at 278oC. Infrared and Raman spectral studies at 80oC have been reported in a study.
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Aplicação

Versatile reducing agent for aldehydes, ketones, acid chlorides, lactones, epoxides, and esters. Applied in the lithiation of 2H-WS2 giving high yields of exfoliated WS2, and opening the way to new intercalation compounds and nanocomposites. Lithium borohydride is used as hydrogen storage system. It regenerates hydrogen at 320-380oC at 10atm (H2 pressure).

Palavra indicadora

Danger

Frases de perigo

Classificações de perigo

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

Código de classe de armazenamento

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

Classe de risco de água (WGK)

WGK 2

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

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


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Tsai, H-L. et al.
Chemistry of Materials, 9, 879-879 (1997)
Fieser, M.
Reagents for Organic Synthesis, 14, 191-191 (1989)
Low temperature infrared and raman spectra of lithium borohydride.
Harvey KB and McQuaker NR
Canadian Journal of Chemistry, 49(21), 3282-3286 (1971)
Mita Dasog et al.
Chemical communications (Cambridge, England), 47(30), 8569-8571 (2011-06-28)
In the presence of large excesses of borohydride salts, gold monolayer protected-clusters can be grown to larger sizes simply by controlling the amount of reducing agent added to smaller clusters. In addition, gold monolayer clusters can be used as catalysts
G Váradi et al.
International journal of peptide and protein research, 43(1), 29-30 (1994-01-01)
For solid-phase peptide synthesis, 2,4-dimethoxy-4'-hydroxbenzhydrol linker was prepared via lithium borohydride reduction of 2,4-dimethoxy-4'-hydroxybenozophenone. The potassium salt of the linker was coupled to chloromethylpolystyrene. This method proved to be better than use of the cesium salt. This new synthesis gave

Artigos

An article about metal borohydrides as hydrogen storage materials

Research and development of solid-state lithium fast-ion conductors is crucial because they can be potentially used as solid electrolytes in all-solid-state batteries, which may solve the safety and energy-density related issues of conventional lithium-ion batteries that use liquid (farmable organic) electrolytes.

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