430-57-9 Usage
General Description
1,2-Dichlorofluoroethane, also known as Freon-152a, is a chemical compound with the formula C2H3Cl2F. It is a colorless, flammable gas with a faint ethereal odor and is commonly used as a refrigerant and as a propellant in aerosol products. 1,2-Dichlorofluoroethane is also used as a solvent in some industrial applications and as a blowing agent in the production of polystyrene foam. It is considered to be relatively stable and non-reactive under normal conditions, but it can pose a hazard to human health and the environment if not handled and disposed of properly. Exposure to 1,2-dichlorofluoroethane can cause irritation to the respiratory system, skin, and eyes, and long-term exposure may lead to more serious health effects. Additionally, it is a potent greenhouse gas with a high global warming potential, and its production and use are regulated under international agreements such as the Montreal Protocol.
Check Digit Verification of cas no
The CAS Registry Mumber 430-57-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,3 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 430-57:
(5*4)+(4*3)+(3*0)+(2*5)+(1*7)=49
49 % 10 = 9
So 430-57-9 is a valid CAS Registry Number.
InChI:InChI=1/C2H3Cl2F/c3-1-2(4)5/h2H,1H2
430-57-9Relevant articles and documents
REACTION OF ORGANIC COMPOUNDS WITH SF4-HF-HALOGENATING SYSTEM VII. REACTIONS OF OLEFINS WITH THE SF4-HF-Cl2(Br2) SYSTEM
Kunshenko, B. V.,Mokhamed, Nagib Mukhtar,Omarov, V. O.,Muratov, N. N.,Yagupol'skii, L. M.
, p. 511 - 518 (2007/10/02)
Under the influence of the SF4-HF-Cl2(Br2) system halogen-containing olefins undergo conjugate halogenofluorination.It was shown for the case of (Z)- and (E)- 1,2-dichloroethenes that these reactions take place anti-stereospecifically through the formation of the bromonium ions.The accumulation of chlorine atoms in the olefin molecule hinders electrophilic addition of stoichiometric equivalents of ClF and BrF at the double bond.The SF4-HF-Br2 system is an effective agent for substitutive fluorination of organic compounds containing bromine.Only the bromine atoms situated at the secondary carbon atom are substituted by fluorine.
