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7789-78-8 - Calcium hydride, coarse powder, ca 92% - A16242 - Alfa Aesar

A16242 Calcium hydride, coarse powder, ca 92%

CAS Number
7789-78-8
Synonyms

Size Price ($) Quantity Availability
50g 40.17
250g 158.00
1000g 490.50
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Calcium hydride, coarse powder, ca 92%

MDL
MFCD00010897
EINECS
232-189-2

Chemical Properties

Formula
CaH2
Formula Weight
42.10
Melting point
600° dec.
Density
1.900
Sensitivity
Moisture Sensitive
Solubility
Soluble in water and alcohol. Insoluble in benzene.

Applications

Calcium chloride is used as an efficient drying agent for aprotic base-stable solvents like ethers and tertiary amines. It is a useful dehydrating agent in a synthesis of aldehyde enamines in high yield and purity.

Notes

Moisture sensitive. Reacts with water vigorously and liberates hydrogen gas. Incompatible with strong oxidizing agents, strong acids, halogens, water and alcohols.

Literature References

Efficient drying agent for aprotic, base-stable solvents, particularly useful for ethers and tertiary amines.

Has been used as a dehydrating agent in a synthesis of aldehyde enamines in high yield and purity: Synth. Commun., 24, 1541 (1994).

Liu, Y.; Wang, X.; Liu, H.; Dong, Z.; Li, S.; Ge, H.; Yan, M. Investigation on the improved hydrolysis of aluminum-calcium hydride-salt mixture elaborated by ball milling. Energy 2015, 84, 714-721.

Leich, V.; Spaniol, T. P.; Okuda, J. Formation of a Cationic Calcium Hydride Cluster with a “Naked” Triphenylsilyl Anion by Hydrogenolysis of Bis(triphenylsilyl)calcium. Inorg. Chem. 2015, 54 (10), 4927-4933.

GHS Hazard and Precautionary Statements

Hazard Statements: H260

In contact with water releases flammable gases which may ignite spontaneously.

Precautionary Statements: P231+P232-P280-P233-P370+P378c-P335+P334-P402+P404-P501a

Handle under inert gas. Protect from moisture. Wear protective gloves/protective clothing/eye protection/face protection. Keep container tightly closed. In case of fire: Use for extinction: CO2, sand, extinguishing powder. Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. Store in a dry place. Store in a closed container. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,1672
Hazard Class
4.3
Packing Group
I
Harmonized Tariff Code
2850.00
TSCA
Yes

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