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695254

Sigma-Aldrich

Calcium borohydride

greener alternative
Linear Formula:
Ca(BH4)2
CAS Number:
Molecular Weight:
69.76
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

powder

Quality Level

reaction suitability

reagent type: reductant

greener alternative product characteristics

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

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SMILES string

[BH4-].[BH4-].[Ca++]

InChI

1S/2BH4.Ca/h2*1H4;/q2*-1;+2

InChI key

MOUPUCLGEWXWHJ-UHFFFAOYSA-N

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This Item
208027239216441872
Calcium borohydride

Sigma-Aldrich

695254

Calcium borohydride

Calcium hydride reagent grade, 95% (gas-volumetric)

Sigma-Aldrich

208027

Calcium hydride

Calcium carbonate ACS reagent, ≥99.0%, powder

Sigma-Aldrich

239216

Calcium carbonate

Calcium dendritic pieces, purified by distillation, 99.99% trace metals basis

Sigma-Aldrich

441872

Calcium

reaction suitability

reagent type: reductant

reaction suitability

reagent type: reductant

reaction suitability

-

reaction suitability

reagent type: reductant

greener alternative product characteristics

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

greener alternative product characteristics

-

greener alternative product characteristics

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greener alternative product characteristics

-

greener alternative category

Enabling

greener alternative category

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greener alternative category

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greener alternative category

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General description

Calcium borohydride may be prepared using several techniques:
  • by reacting diborane with calcium hydride/alkoxides
  • by ball milling CaCl2 and NaBH4, resulting in an exchange reaction
  • by exchange reaction between CaCl2 and NaBH4 in THF
Ca(BH4)2 decomposes partially at 360oC and completely at 500oC.Ca(BH4)2 finds use in fuel cell, a study reports the lowering of hydrogen release temperature and pressure, by using TiCl3 as dopant.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Application

Calcium borohydride is a complex alkali earth metal borohydride, which has high gravimetric and volumetric hydrogen densities. It has a theoretical hydrogen capacity of 11.6 wt% and a low-reaction enthalpy of 32 kJ/mol H2. It can be used for greener applications, which include reversible hydrogen storage.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Skin Corr. 1B - Water-react 2

Supplementary Hazards

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Significantly enhanced dehydrogenation properties of calcium borohydride combined with urea
Chu H, et al.
Dalton Transactions, 43(41), 15291-15294 (2014)
Reversible hydrogen storage in calcium borohydride Ca (BH4) 2
Kim J, et al.
Scr. Mater., 58(6), 481-483 (2008)
Nanoconfinement in activated mesoporous carbon of calcium borohydride for improved reversible hydrogen storage
Comuanescu C, et al.
Nanotechnology, 23(38), 385401-385401 (2012)
Synthesis and characterisation of a mesoporous carbon/calcium borohydride nanocomposite for hydrogen storage
Ampoumogli A, et al.
International Journal of Hydrogen Energy, 37(21), 16631-16635 (2012)
Metal Borohydrides as Hydrogen Storage Materials
Soloveichik GL
Material Matters, 2(2), 11-11 (2007)

Articles

Metal Borohydrides as Hydrogen Storage Materials

An article about metal borohydrides as hydrogen storage materials

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Mechanochemical Effect of Severe Plastic Deformations: Metal Alloys, Hydrides and Molecular Solids

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