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8.02100 EMD Millipore

Calcium hydride

Calcium hydride for synthesis. CAS 7789-78-8, chemical formula CaH₂., for synthesis

  • CAS Number 7789-78-8

  • Linear Formula H₂Ca

  • Molecular Weight 42.09 g/mol

  •  EC Number 232-189-2

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Properties

packaging   100 g in Glass bottle (8021000100)
density   1.9 g/cm3 (20 °C)
autoignition temp.   >300 °C
mp   816 °C
storage temp.   Store below +30°C.
specifications   Assay (by gasvolumetry): ≥ 95.0 %
  Particle size: 0 -20 mm

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Safety & Documentation

Safety Information

HS Code 
2850 00 20
Hazard Statement(s) 
H260: In contact with water releases flammable gases which may ignite spontaneously.
Precautionary Statement(s) 
P402 + P404: Store in a dry place. Store in a closed container.
Storage class 
4.3 Hazardous materials, which set free flammable gases upon contact with water
WGK 
WGK 1 slightly water endangering
Disposal 
26
Alkali and alkaline-earth metals should be taken up in an inert solvent and neutralized by adding 2-propanol (Cat. No. 100995) dropwise with stirring. Should the reaction be more violent than expected, conversion should be carried out with tert-butanol or octanol. Caution: This reaction produces hydrogen, which can form explosive mixtures; take necessary precautions. When the reaction has ceased, add water dropwise; neutralize; container D. In the case of alkali or alkaline-earth borohydrides, add methanol (Cat. No. 106008) with stirring; in the case of alkali or alkaline-earth amides and hydrides, organoaluminium and organotin hydrides, add 2-propanol (Cat. No. 100995) dropwise. The substances, which are usually in solid form, should be previously suspended in an ether! When the respective reaction has ceased, hydrolize with water; then neutralize. Container D or E. Lithium aluminium hydride must also be destroyed by slurrying in an ether. Under an inert gas and with thorough stirring, add dropwise a 1:4 mixture of ethyl acetate (Cat. No. 822277) and the ether used to prepare the slurry. Always ensure thorough mixing (stirring)! Container A.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Symbols 
Flammable  Flammable
Declaration (railroad and road) ADR, RID 
UN 1404 , 4.3, I
Declaration (transport by air) IATA-DGR 
UN 1404 , 4.3, I
Declaration (transport by sea) IMDG-Code 
UN 1404 , 4.3, I
Categories of danger 
highly flammable
R Phrase 
R 15
Contact with water liberates extremely flammable gases.
S Phrase 
S 7/8-24/25-43
Keep container tightly closed and dry.Avoid contact with skin and eyes.In case of fire, use fire-fighting equipment on basis class D.
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