338-64-7 Usage
General Description
1-Chloro-1,2-difluoroethane, also known as HCFC-142b, is a colorless gas with a faint ethereal odor. It is a halogenated hydrocarbon, consisting of one chlorine atom, two fluorine atoms, and two carbon atoms. This chemical is primarily used as a refrigerant and in the production of foam-blowing agents for insulation, packaging, and automotive applications. It is also used as a solvent for cleaning and degreasing, as well as a propellant in aerosol products. However, due to its ozone-depleting properties, 1-Chloro-1,2-difluoroethane is being phased out and replaced with more environmentally friendly alternatives under the Montreal Protocol. It is important to handle and use this chemical with caution, as it can be harmful if inhaled or exposed to skin and eyes.
Check Digit Verification of cas no
The CAS Registry Mumber 338-64-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,3 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 338-64:
(5*3)+(4*3)+(3*8)+(2*6)+(1*4)=67
67 % 10 = 7
So 338-64-7 is a valid CAS Registry Number.
InChI:InChI=1/C2H3ClF2/c3-2(5)1-4/h2H,1H2
338-64-7Relevant articles and documents
The chlorination of 1,2-difluoroethane (HFC-152)
Nappa, Mario J.,Sievert, Allen C.
, p. 111 - 118 (2007/10/02)
The photochlorination of CH2FCH2F yields CH2FCCl2F and CHClFCHClF, both of which were considered to be potential replacements for CFC-113 (CCl2FCF2Cl) based on their boiling points (48 deg C and 59 deg C, respectively).The CHClFCHClF/CH2FCCl2F ratio can be controlled by the choice of solvents.In aromatic solvents, the reactivity of the chlorine radical is reduced, increasing the amount of CH2FCCl2F produced.Relative rates in CCl4 and in the presence of water were compared to rates in aromatic solvents.Both CH2FCCl2F and CHClFCHClF failed in early toxicity tests and will thus not be pursued as HCFC replacements for CFC-113.
