Chlorodifluoromethane Freon

Chlorobenzene (monochlorobenzene) Chlorobromomethane 2-Chloro-l, 3-butadiene, see Chloroprene Chlorodifluoromethane (Freon 22)... 

Leu, A.-D., Robinson, D.B. (1992) High-pressure vapor-liquid equilibrium phase properties of the octafluoropropane (K-218)-chlorodifluoromethane (Freon-22) binary system. J. Chem. Eng. Data 37, 7-10. 

Freon 21. See Dichlorofluoromethane Freon 22. See Chlorodifluoromethane Freon 23. See Trifluoromethane Freon 30. See Methylene chloride Freon 31. See Chlorofluoromethane Freon 112. See 1,1,2,2-Tetrachloro-1,2-difluoroethane... 

Fluorodibromo- [19] and fluorodiiodomethane [20] each react to form a fluorohalocarbene. Chlorodiiodomethane and triiodomethane (iodoform) have likewise been subjected to phase transfer conditions and have yielded the expected car-benes [21 ]. On the other hand, chlorodifluoromethane (Freon 22) did not yield the desired difluorocarbene and it appears that no attempt to prepare either chlorobromo-... 

Tetrafluoroethylene (TFE), also known as perfluoroethylene, is a colorless, flammable, toxic gas. It is the monomer used for polytetrafluoroethylene (PTFE), which is sold under the DuPont tradename of Teflon. TFE is co-polymerized with other compounds to produce a variety of Teflons. TFE is produced by heating chlorodifluoromethane (CHC1F2, Freon-22) or trifluoromethane (CldF3, Freon-23). TFE is used almost exclusively as a monomer in the production of PTFE. PTFE is a vinyl polymer, which means it is made from a monomer with carbon-carbon double bonds. PTFE is made from TFE by free radical polymerization. 

In connection with the study of the role Freon compounds play in the depletion of ozone in the atmosphere, a demand has arisen for 13C-labeled fluorinated hydrocarbons in infrared spectroscopic examination. For this purpose,13C-isotopically enriched trichlorofluoromethane, dichlorodifluoromethane, chlorotrifluoromethane, trifluoromethane, chlorodifluoromethane, and dichlorofluoromethane have been prepared from 13CC 4 and 13CHC13.73... 

Freon—22" or "F—22" or Monochlorodi-fluoromethane. See chlorodifluoromethane in this Section... 

Bromochlorodifluoromethane (BCF, FC 12B1) Carbon tetrachloride (tetrachloromethane) Chlorodifluoromethane (FC 22, Freon 22) Chloroform (trichloromethane) Dichlorodifluoromethane (FC 12, Freon 12)... 

An excellent review of freeze fracturing is found in a chapter by McNutt [428]. The method has been described for the preparation of biological membranes. An older, improved version of the method was described by Steere [429] and Moor et ah [430], while a review of the method and application to membranes was described by Branton [431]. The method involves cementing a 1-2 mm piece of the material onto a copper disc with gum arabic dissolved in 20% glycerin and then transferring the material to liquid Freon 22 (chlorodifluoromethane). The specimen is fractured with a cold knife in a vacuum evaporator. 

SEC has also been used for the separation of phenols [105-107]. The supercritical fluid normally used is carbon dioxide with some modifier, for example, methanol or chlorodi-fluoromethane (Freon 22) [106]. Berger and Deye tested binary and tertiary supercritical mixtures, among them methanol/carbon dioxide mixtures containing very polar additives [107]. Ong et al. used chlorodifluoromethane as the supercritical fluid [105]. In most studies, UV detection was used and did not measure up to the required sensitivity. To bypass this problem, an online system with SPE cormected to the SFC instrmnentation was designed. Some of these systems are presented in the following section. 

Freon 22 chlorodifluoromethane Arcton 22 20 6 Slight attack some absorption depends on end use conditions ... 

Freon 22 chlorodifluoromethane 23 0-360 8 Resistant - slight changes in mass or dimensions no irreversible change ULTRADUR... 

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