Freon 1,1,2-Trichloro-1,2,2-trifluoroethane

Freon—113" or "F—113". See Trichloro-trifluoroethane in this Section "Freon—114" or " F—114". See Dichloro-tetrafluoroethane in this Section "Freon—C318". See Octafluorocyclobutane in this Section... 

Several different solvents have been used. These include petroleum ether, diethyl ether, chloroform, and carbon tetrachloride. Of these, petroleum ether and diethyl ether are highly flammable, whereas chloroform (although a very good solvent) and carbon tetrachloride are toxic. Thus, these solvents are not recommended for use. Currently, 1,1,2 trichloro, trifluoroethane (Freon 113) is used when infrared (IR) absorbance is used for analysis. However, these solvents are being phased out because of potential interference with the ozone layer in the atmosphere. Studies are currently under way to find a replacement solvent. Potential candidates include hexane, cyclohexane, methylene chloride, perchloroethylene, and a commercial hydro chlorofluorocarbon (DuPont 123). When the gravimetric technique is used for analysis, 1,1,1-trichloroethane or dichloroethylene may also be used. 

Synonyms AI3-62874 Arcton 63 Arklone Arklone P BRN 1740335 CFG 113 Daiflon S 3 Distillex DS5 EINECS 200-936-1 Eskimon 113 F 113 EC 113 Flugene 113 Fluorocarbon 113 Forane Freon 113 Freon TF Frigen 113 TR-T Genetron 113 Halocarbon 113 Isceon 113 Kaiser chemicals 11 R 113 Racon 113 Refrigerant 113 l,l,2-Trichloro-l,2,2-trifluoroethane Trichlorotrifluoroethane l,l,2-Trifluoro-l,2,2-trichloroethane TTE Ucon 113 Ucon fluorocarbon 113 Ucon 113/halocarbon 113. 

To analyze charcoal tubes or vapor monitors for hydrocarbons by IR, the desorption solvent would have to be IR inactive in the region 3100 to 2750 cm-. Two such solvents Freon R 113 (1,1,2 trichloro-1,2,2-trifluoroethane) and perchloroethylene meet this requirement. 

All three compounds (WF6 and MoF6 are best) will bring about a reaction (not a fluorination) that may have synthetic utility at 0CC in l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113) or chloroform they will cleave N,TV-dimethyl- and N-tosylhydrazones and oximes back to the parent carbonyl compounds12,14 (UF6 converts any first-formed aldehydes into acid fluorides1213). All three hexafluorides will convert1215 tertiary amines into carbonyl compounds and carboxylic acids into acid fluorides.16 They also dope polyacetylene to the metallic regime.17... 

Molybdenum(VI) fluoride is a colorless solid with mp 17.5 C, bp 37 °C, and a liquid density of 2.55. It is soluble in l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113) and chlorinated solvents, although it reacts slowly with carbon tetrachloride 18 it cleaves most ethers9 and reacts18 vigorously with carbon disulfide to give sulfur and bis(trifluoromethyl) disulfide. 

The effect of ultrasound on the course of the Balz-Schiemann reaction has been studied using benzenediazonium tetrafluoroborate.263 In the presence of triethylamine trihydrofluoride in l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113), fluorobenzene is formed in a 92-95% yield under 17 kHz sonication for 8 hours at 40 °C. Without ultrasound, only an 85 % yield is obtained after a reaction time of 16 hours. 

Freon-113 (l,l,2-trichloro-l,2,2-trifluoroethane) was employed as a reagent gas in a NICI investigation on phenolic compounds in order to detect the phenolic acid fractions of coal-derived liquids. These fractions were evaporated into the ion source through a direct inlet probe. The method is based on the chloride attachment reaction leading to the almost exclusive formation of the [M + Cl]- adducts, which allow the relative molecular mass profiles to be obtained336. 

Fluorobenzene has been obtained in 92 95 % yield via ultrasound-promoted decomposition of benzcncdiazonium tetrafluoroborate in the presence of triethylamine trishydrofluoride in 1,1,2-trichloro-l,2,2-trifluoroethane (Freon 113) at 40 C for 8 hours.70... 

A solution of both ammonium pyrrolidinedithiocarbamate and diethyldithio-carbamate has been used for eomplexing iron (Co, Ni, Cu, Zn, Cd, Pb) in sea water. The metal carbamate complexes are extracted from 500 ml of sea water at ca. pH 5 into 30 ml of Freon TF (l,l,2-trichloro-l,2,2-trifluoroethane) and back-extracted into 10 ml of 0.3 M nitric acid. The main advantage of this method is the transfer of the metals to a solution in which their concentrations do not change with time 70). 

The very rapid oxidation of phenols by solvent radical cations can be expected to yield phenol radical cations as the first products. These species are short-lived, except in highly acidic solutions, and were not observed in the microsecond pnlse radiolysis experiments described above. They were detected, however, in frozen matrices and with nanosecond pulse radiolysis Gamma irradiation of phenols in w-butyl chloride or in l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113) at 77 K produced phenol radical cations, which were detected by their optical absorption and ESR spectra . Annealing to 133 K resulted in deprotonation of the radical cations to yield phenoxyl radicals. Pulse radiolysis of p-methoxyphenol and its 2,6-di-fert-butyl derivative in w-butyl chloride at room temperature produced both the phenol radical cations and the phenoxyl radicals. The phenol radical cations were formed very rapidly k = 1.5 x 10 ° M s ) and decayed in a first-order process k = 2.2 x 10 s ) to yield the phenoxyl radicals. The phenoxyl radicals were partially formed in this slower process and partially in a fast process. The fast process of phenoxyl formation probably involves proton transfer to the solvent along with the electron transfer. When the p-methoxy group was replaced with alkyl or H, the stability of the phenol radical cation was lower and the species observed at short times were more predominantly phenoxyl radicals. 

Method C. To a solution of 1,1-dibromocyclopropane (0.8 mmol) in THF (3.5 mL) was slowly added a hexane solution of BuLi (l.Ommol) at — 85 C under Nj. To this solution was added at — 85 C, hexa-chloroethane or l,l,2-trichloro-l,2,2-trifluoroethane (Freon-113) and the mixture was stirred at — 85°C for 0.5 h. To this was added a THF (3.5 mL) solution of lithium trialkylzinc (1.3 mmol) and the mixture was warmed from — 85 C to rt during a period of 3 h and stirred for a further 0.5 h at the same temperature. The mixture was then hydrolyzed with dil HCl, extracted with EtjO, dried, and the product isolated by flash chromatography. 

MS. The first methods of sample preparation were performed by liquid-liquid extraction using solvents, such as dichloromethane/ pentane 2 1 (v/v), Freon 11, or a Freon 11-dichloromethane 9 1 (v/v) mixture (Drawert and Rapp, 1968 Hardy, 1969 Rapp et al, 1978 Marais, 1986). Alternatively, liquid-liquid discontinuous extraction with l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113 or Kaltron), was proposed (Ferreira et al., 1993 Rapp et al, 1994 Genovese et al., 2005). 

Freon 113. See Trichlorotrifluoroethane Freon 114. See 1,2-Dichlorotetrafluoroethane Freon 115. See Chloropentafluoroethane Freon 116. See Hexafluoroethane Freon 124. See 2-Chloro-1,1,1,2-tetrafluoroethane Freon 142 Freon 142b. See 1,1,1-Chlorodifluoroethane Freon R 1216. See Hexafluoropropylene Freon C-318. See Octafluorocyclobutane Freon FT. See 1,1,1-Trichloro-2,2,2-trifluoroethane... 

Only those fluoropolymers that are soluble in uncommon solvents are reviewed here. One of these is perfluoroether polymer, which can be chromatographed in l,l,2-trichloro-l,2,2-trifluoroethane (Freon 113). SEC of poly(bistrifluoroethoxyphosphazenes) was successfully conducted in cyclohexanone in the presence of tetrabutylammonium nitrate (TBAN). Polytrifluorochloroethy-... 

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