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21170

Sigma-Aldrich

Calcium hydride

purum p.a., ≥97.0% (gas-volumetric), powder

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About This Item

Empirical Formula (Hill Notation):
H2Ca
CAS Number:
7789-78-8
Molecular Weight:
42.09
EC Number:
232-189-2
MDL number:
MFCD00010897
UNSPSC Code:
12352300
PubChem Substance ID:
57647909
NACRES:
NA.21

grade

purum p.a.

Quality Level

200

Assay

≥97.0% (gas-volumetric)

form

powder

reaction suitability

reagent type: reductant

mp

816 °C (lit.)

anion traces

chloride (Cl-): ≤2000 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

Cd: ≤0.005%
Co: ≤0.005%
Cu: ≤0.02%
Fe: ≤0.005%
K: ≤0.01%
Na: ≤0.05%
Ni: ≤0.005%
Pb: ≤0.005%
Zn: ≤0.005%

SMILES string

[Ca]

InChI

1S/Ca.2H

InChI key

FAQLAUHZSGTTLN-UHFFFAOYSA-N

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Application

Calcium hydride can be used as a reducing agent for the dechlorination of chlorinated organic compounds. It can also be used as a drying agent to dry pyridine.

Other Notes

Desiccant for aprotic solvents, e.g. benzene, dioxane, DMF and HMPT

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H260,H315,H319

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 3: Spontaneously combustible substances and water- reactive materials
Metal hydrides
Hazardous rank I
1st spontaneously combustible materials and water reactive materials

JAN Code

21170-BULK-F:
21170-VAR-F:
21170-500G-F:
21170-25G-F:
21170-100G-F:

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Certificates of Analysis (COA)

Lot/Batch Number
STBK6273
STBK1397
STBK0351
STBJ1566
STBH8971

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Desiccant efficiency in solvent drying. 3. Dipolar aprotic solvents.
D R Burfield et al.
The Journal of organic chemistry, 43(20), 3966-3968 (1978-09-01)
Juliane F Ferreira et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 189, 44-50 (2017-08-12)
A new quinoline-amide calix[4]arene 3-receptor for detection of hazardous anions and cations have been synthesized. The 3-receptor was examined for its sensing properties towards several different anions (Cr
Selective mechanochemical dehalogenation of chlorobenzenes over calcium hydride.
Loiselle S, et al.
Environmental Science & Technology, 31(1, 261-265 (1991)
D.R. Burfield et al.
The Journal of Organic Chemistry, 42, 3060-3060 (1977)
The mechanochemical self-propagating reaction between hexachlorobenzene and calcium hydride.
Mulas G, et al.
Journal of Solid State Chemistry, 129(2), 263-270 (1997)
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