Halogenated hydrocarbons 1.1- dichloroethylene

Synonyms 1,1-Dichloroethylene 1,1-Dichloroe-thene Vinylidene dichloride Sconatex Chemical/Pharmaceutical/Other Class Vinylidene chloride is an unsaturated halogenated hydrocarbon. 

Violent reaction with acids, trans-acetylene dichloride, alcohols, organic anhydrides, aldehydes, alkylene oxides, aminotetrazole, /j-bis(l,3-dibromoethy )benzene, bromoform, captrolactam solution, chlorine dioxide (explodes), chloroform, cresols, cyclopentadiene, cis-dichloroethylene, epichlorohydrin, ethylene dichloride, germanium, glycols, halogenated hydrocarbons, iodine pentafluoride, isocyanates, maleic anhydride, nitrogen trichloride,... 

The technology is applicable to chlorinated and nonchlorinated VOCs methyl tertiary butyl ether (MTBE) dichloroethylene (DCE), trichloroethylene (TCE), and tetrachloroethylene (per-chloroethylene, PCE) dichloroethane (DCA) vinyl chloride alcohols ethers ketones and halogenated and nonhalogenated paraffinic, olefinic, aliphatic, and aromatic hydrocarbons. It is very effective at treating benzene, toluene, ethylbenzene, and xylene (BTEX) compounds and any oxygenate, such as acetone or isopropanol. 

The trans -> cis isomerisation of octafluorobut-2-ene is claimed by Schlag and Kaiser " to be a clean unimolecular reversible reaction. Studies by the static method using a seasoned quartz reaction vessel at 430-477 °C yielded the Arrhenius parameters, A = 3.4x 10 sec E = 56.4 kcal.mole L The E value is 6.4 kcal.mole lower than for the corresponding hydrocarbon - . Craig and Entemann have compared the standard enthalpy change for the cis trans isomerisation of 1,2-difluoroethylene with those for related halogenated ethylenes. The reported values are 4-928 cal.mole for difluoroethylene, 4-500 cal.mole for dichloroethylene, nearly zero for dibromoethylene, and —2000 cal.mole for diiodoethylene. 

Cometabolism observed at methanotrophs is a result of nonspecific methane monooxygenase activity towards organic compounds that do not serve as carbon or energy sources (Brigmon, 2001). A soluble form of monooxygenase (sMMO), which is present in the type II methanotrophs, has low substrate specificity. It is able to oxidize several alkanes and alkenes, cychc hydrocarbons, aromatics, and halogenic aromatics (Grosse et al. 1999) for instance, trans-dichloroethylene, vinyl chloride (Yoon Semrau, 2008), dichloromethane (DCM) (Chiemchaisri et al. 2001), and 1,1,1-trichloroethane (TCA) (Kjeldsen et al. 1997). 

---