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Key Documents

8.02100

Sigma-Aldrich

Calcium hydride

for synthesis

Synonym(s):

Calcium hydride

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About This Item

Empirical Formula (Hill Notation):
H2Ca
CAS Number:
Molecular Weight:
42.09
MDL number:
UNSPSC Code:
12352306
EC Index Number:
232-189-2
NACRES:
NA.22

Quality Level

form

solid

autoignition temp.

>300 °C

reaction suitability

reagent type: reductant

mp

816 °C

density

1.9 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/Ca

InChI key

OYPRJOBELJOOCE-UHFFFAOYSA-N

Application

Calcium hydride (CaH2) can be used as a reducing agent to synthesize metallic elements (e.g., Ti, Zr, V, Nb, U, and Th) from metal oxides via the calcium hydride reduction process at higher temperature (600–1000°C). Metallic calcium produced by thermal decomposition is the actual reducing agent in this process. CaH2 is also used to reduce various metal hydrides to metals.

Analysis Note

Assay (by gasvolumetry): ≥ 95.0 %
Particle size: 0 -20 mm

Pictograms

FlameExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - Water-react 1

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Ullmann's Encyclopedia of Industrial Chemistry (2000)

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