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222356

Sigma-Aldrich

Lithium borohydride

greener alternative

≥90%

Sinonimo/i:

Lithium boron hydride, Lithium hydroborate

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About This Item

Formula condensata:
LiBH4
Numero CAS:
16949-15-8
Peso molecolare:
21.78
Numero CE:
241-021-7
Numero MDL:
MFCD00011088
Codice UNSPSC:
26111700
ID PubChem:
24853325
NACRES:
NA.22

Livello qualitativo

100

Saggio

≥90%

Stato

solid

Impiego in reazioni chimiche

reagent type: reductant

Caratteristiche più verdi

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

sustainability

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Punto di fusione

275 °C (dec.)

Densità

0.666 g/mL at 25 °C (lit.)

Categoria alternativa più verde

Enabling,

Stringa SMILE

[Li+].[BH4-]

InChI

1S/BH4.Li/h1H4;/q-1;+1
UUKMSDRCXNLYOO-UHFFFAOYSA-N

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Descrizione generale

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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Applicazioni

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).

Avvertenze

Danger

Indicazioni di pericolo

H260,H301,H314

Classi di pericolo

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

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

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

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Certificati d'analisi (COA)

Lot/Batch Number
SHBN8216
SHBL4900
SHBJ9743
SHBG8546V
SHBC5111V

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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
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Articoli

Metal Borohydrides as Hydrogen Storage Materials

An article about metal borohydrides as hydrogen storage materials

Complex Hydrides: A New Category of Solid-state Lithium Fast-ion Conductors

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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