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422-50-4

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422-50-4 Usage

Usage

a. Refrigerant
b. Solvent in the electronics industry

Physical state

Colorless, volatile liquid

Odor

Faint sweet

Flammability

Non-flammable

Chemical classification

Chlorofluorocarbon (CFC)

Environmental impact

Known to deplete the ozone layer

Regulation

Montreal Protocol on Substances that Deplete the Ozone Layer

Production and use

Phased out in many countries, significantly decreased in recent years

Industrial applications

Limited, primarily in the maintenance of older refrigeration equipment

Check Digit Verification of cas no

The CAS Registry Mumber 422-50-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 422-50:
(5*4)+(4*2)+(3*2)+(2*5)+(1*0)=44
44 % 10 = 4
So 422-50-4 is a valid CAS Registry Number.

422-50-4Relevant articles and documents

Ligand effect on regioselectivity in the addition reaction of tetrachloromethane with trifluoroethene catalyzed by copper(I) complexes

Kotora, M.,Hajek, M.

, p. 101 - 106 (1993)

The regioselectivity of the addition reaction of tetrachloromethane with trifluoroethene is influenced by the structure of the amine ligand in the copper(I) complex used as the catalyst.The regio isomer ratio varied over the range 0.86 - 2.72 indicating a significant ligand effect on the regioselectivity.The results confirm the assumption that the addition reaction proceeds in the coordination sphere of the copper complex.

Addition of tetrachloromethane to trifluoroethene catalyzed by copper complexes

Kotora, M.,Hajek, M.

, p. 57 - 62 (2007/10/02)

The addition of tetrachloromethane to trifluoroethene catalyzed by copper complexes gives 1:1 adducts in up to 97percent yield under mild reaction conditions.The catalytic activity and the regioselectivity of copper, ruthenium and palladium complexes and dibenzoyl peroxide have been compared.Differeneces in regioselectivity indicate that the copper-coordinated trichloromethyl radical is involved in copper-assisted addition reactions, whilst free-radical species in an uncomplexed form play a role in other cases.

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