Cloro fluoro carbono pdf

For example, a common refrigerant has the chemical formula of ccl2 f2. Per il contenimento e il trattamento sicuro di soluzioni concentrate di hf e hcl potete fare affidamento sulle tecnologie di fluoropolimeri del nostro marchio edlon. The team focused their effort on compounds containing carbon and halogens such as fluorine and chlorine. Because of a growing concern over stratospheric ozone depletion and its attendant dangers, a ban was imposed on the use of cfcs in aerosolspray dispensers in the late 1970s by the united states. Chlorofluorohydrocarbon an overview sciencedirect topics. The production of the anesthetic 2bromo2chloro1,1,1trifluoroethane. Chlorofluorocarbons and ozone depletion american chemical.

Cfc merupakan gas yang berwarna biru tua, stabil, tidak mudah terbakar, mudah disimpan, dan murah harganya. Clorofluorocarboneto wikipedia, a enciclopedia livre. Hcfc, and hfc and compressed gases nitrogen, nitrous oxide, and carbon dioxide 1. Hcfc21 dichlorofluoromethane and hcfc31 chlorofluoromethane are both methane derivatives and hcfc3a 1chloro2,2,2trifluoroethane is an ethane derivative. Pdf refrigerants and their environmental impact substitution of. Chlorofluorocarbon definition of chlorofluorocarbon by the. The third digit from the right the number of carbon atoms minus 1. Hydro fluorocarbons hfc have replaced hydrochlorofluorocarbons and chlorofluorocarbons. The development of environmentally acceptable fluorocarbons. Esempi di clorofluorocarburi sono il diclorodifluorometano, ccl2f2, e il diclorotetrafluoroetano, cclf2cclf2.

Hcfc141b 1,1dichloro1fluoroethane, again a relative newcomer, is produced in much larger quantities for use either as a. Use of the information, documents and data from the echa website is subject to the terms and conditions of this legal notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the echa website may be reproduced, distributed andor used, totally or in part, for noncommercial purposes provided that echa is. Chlorofluorocarbons cfcs and hydrochlorofluorocarbons hcfcs are fully or partly. The most common cfcs are small molecules containing only one or two carbon atoms. A special numbering system is to be used for fluorinated alkanes, prefixed with freon, r, cfc and hcfc, where the rightmost value indicates the number of fluorine atoms, the next value to the left is. Effets des chlorofluorocarbones sur lenvironnement et les. Hydro fluorocarbons hfc have replaced hydrochlorofluorocarbons and chloro fluorocarbons. Chlorofluorocarbon definition of chlorofluorocarbon by. Cfc adalah singkatan dari chloroflourocarbon yang terbentuk dari atom chlor, flour, dan carbon. The burning of fossil fuels coal, oil and natural gas produces carbon dioxide. Investigation of cfc substitutes to arrest ozone depletion science. Use of the information, documents and data from the echa website is subject to the terms and conditions of this legal notice, and subject to other binding limitations provided for under applicable. Esempi di clorofluorocarburi sono il diclorodifluorometano, ccl 2.

A special numbering system is to be used for fluorinated alkanes, prefixed with freon, r, cfc and hcfc, where the rightmost value indicates the number of fluorine atoms, the next value to the left is the number of hydrogen atoms plus 1, and the next value to the left is the number of carbon atoms less one zeroes are not stated, and the remaining atoms are chlorine. Chlorofluorocarbon cfc, any of several organic compounds composed of carbon, fluorine, and chlorine. As in simpler alkanes, carbon in the cfcs bonds with tetrahedral symmetry. Cfc chloro fluoro carbon, sebagai penyebab menipisnya lapisan ozon labels. Black in news, kimia, kuliah pernahkah anda mengatakan pada siang hari aduhpanas banget hari ini. Recently lower gwp hfcs and very low gwp hfos hydrofluoroolefins and hcfos. A special numbering system is to be used for fluorinated alkanes, prefixed with. When cfcs also contain hydrogen in place of one or more chlorines, they are called hydrochlorofluorocarbons, or hcfcs. Cfc chloro fluoro carbon, sebagai penyebab menipisnya. Hcfc142b 1chloro1,1difluoroethane is also used to blow plastic foam. Pdf globally, the production of cold housing is seen as a major energy. Cfc any of various halocarbon compounds consisting of carbon, hydrogen, chlorine, and fluorine, once used widely as aerosol propellants and. The production of the anesthetic 2bromo2chloro1,1,1 trifluoroethane. Hydrochlorofluorocarbon an overview sciencedirect topics.