355-20-4 Usage
General Description
2,3-Dichlorooctafluorobutane is a chemical compound with the molecular formula C4Cl2F8. It is a colorless, odorless gas that is used as a gaseous fire suppression agent in extinguishing systems. It is also known by its commercial name Halon 2402. 2,3-Dichlorooctafluorobutane is considered a highly effective fire extinguishing agent as it extinguishes fires by removing heat and inhibiting the chemical reaction necessary for combustion. However, it is also being phased out due to its contribution to ozone depletion, and it is being replaced by more environmentally friendly alternatives. Additionally, exposure to 2,3-Dichlorooctafluorobutane can be harmful to human health, so proper handling and safety precautions are necessary when using this chemical.
Check Digit Verification of cas no
The CAS Registry Mumber 355-20-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,5 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 355-20:
(5*3)+(4*5)+(3*5)+(2*2)+(1*0)=54
54 % 10 = 4
So 355-20-4 is a valid CAS Registry Number.
InChI:InChI=1/C4Cl2F8/c5-1(7,3(9,10)11)2(6,8)4(12,13)14
355-20-4Relevant articles and documents
A Novel Hydrodechlorinative Dimerization of Chlorofluorocarbons over Supported Ni Catalysts
Tomioka, Satoshi,Mori, Tohru,Ueda, Wataru,Morikawa, Yutaka,Ikawa, Tsuneo
, p. 1825 - 1826 (2007/10/02)
1,1,1-Trichloro-2,2,2-trifluoroethane or 1,1-dichloro-1,2,2,2-tetrafluoroethane, both of which have CF3 group, dimerizes over supported Ni catalysts at an elevated temperature (723 K) into corresponding C4-compounds in good to moderate yields.
REACTION OF POLYHALOGENATED UNSATURATED COMPOUNDS WITH VANADIUM PENTAFLUORIDE
Petrov, V. A.,Bardin, V. V.,Furin, G. G.,Avramenko, A. A.,Galakhov, M. V.,et al.
, p. 37 - 41 (2007/10/02)
Terminal polyhalogenoalkenes are fluorinated by vanadium pentafluoride at -20 to -30 deg C, whereas internal polyfluoroalkenes only react with vanadium pentafluoride when heated. 2-Chloropentafluoro-1,3-butadiene adds fluorine atoms predominantly at positions 1,4 under the influence of vanadium pentafluoride, but only the isomeric tetrafluorohexachlorobutanes are formed from perchloro-1,3-butadiene.Fluorination of perfluoroallylbenzene and perfluoro-β-methylstyrene takes place more rapidly in the side chain than in the aromatic ring.
