F 1,1,1 -Trichloroethane

Tributyl phosphate 1,1,1 -Trichloroethane, see Methyl chloroform F (0.8 pm MCEF)... 

C, and C2 halocarbons of natural and anthropogenic origin are omnipresent in the atmosphere and the ocean. For example, in the eighties, typical concentrations in the northern hemisphere air and in Arctic seawater of 1,1,1-trichloroethane (also called methyl chloroform, MCF) and tribromomethane (bromoform, BF) were measured by F ogelqvist (1985) ... 

Volatile organic compounds (VOCs), especially trihalomethanes, are frequently found in drinking water due to the chlorination of humic acids. When UV irradiation is applied to the pre-ozonation of humic acids, the decomposition of VOC precursors increases (Hayashi et al., 1993). The ozonation rates of compounds such as trichloroethylene, tetrachloroethylene, 1,1,1-trichloroethane, 1,2-dichloroethane, and 1,2-dichloropropane were found to be dependent on UV intensity and ozone concentration in the aqueous phase by Kusakabe et al. (1991), who reported a linear relationship between the logarithmic value of [C]/[C0] and [03]f for 1,1,1-trichloroethane, trichloroethylene, and tetrachloroethylene. The other two organochlorines followed the same first-order kinetics with and without UV irradiation (Kusakabe et al., 1991). Thus, the decomposition rate can be expressed as ... 

Torkelson TR, Oyen F, McCollister DD, et al. 1958. Toxicity of 1,1,1-trichloroethane as determined on laboratory animals and human subjects. Am Ind Hyg Assoc J 19 353-362. 

The liquid-phase fluorination processes can proceed in a noncatalytic way. This is the case for the exchange reaction by H F of the first Cl atom of 1,1,1-trichloroethane leading to l,l-dichloro-2-fluoroethane [Eq. (1)] around 100 °C with HF as the reaction solvent [1]. 

Frequently check the temperature of discharging condenser coolant. Maintain the condenser coolant flow so maximum outlet temperature is in the range of 100 to 120°F (38 to 49°C) for perchlo-roethylene, 1,1,1-trichloroethane and trichloroethylene, and less than 75°F (24°C) for methylene chloride and tri-chlorotrifluoroethane. 

Figure 24 Amounts of metal cations (mol x lO ) transported into the receiving phase versus time (h) for competitive BLM transport of alkali metal cations (0.20 M in each) by 0.010 M 2 in (a) chloroform, (b) dichloromethane, (c) carbon tetrachloride, (d) 1,2-dichloroethane, (e) 1,1,1-trichloroethane, and (f) o-dichlorobenzene. (Reproduced from Ref. 87. Elsevier, 2005.)...

M. Williams and F. Llados, Toxicological Profile for 1,1,1-Trichloroethane. Agency for Toxic Substances and Disease Registry (ATSDR), US Department of Health and Human Services, Atlanta, 1995. 

CRS tubes are available loaded with benzene, toluene and xylene (BTX) at levels of 100 ng or 1 pg per component TO-17 standards at 25 ng per component of benzene, toluene, xylene, dichloromethane, 1,1,1-trichloroethane, 1,2,4-trimethylbenzene, methyl-f-butyl ether, butanol, ethyl acetate and methylethyl ketone. Custom CRS tubes are also available on a variety of sorbents for a wide range of compounds from different vendors. 

A known weight of the specimen dissolved in a specified solvent (1,1,1 trichloroethane, see 7.11) maintained at 0 to 5 C (32 to 41 F) is titrated with standmd bromide-bromate solution. The end point is indicated by a sudden change in potential on an electrometric end point titration apparatus due to the presence of free bromine. 

Treybal, R.E., Weber, L.D., Daley, J.F. (1946) The system, acetone-water-1,1,2-trichloroethane. Ternary liquid and binary vapor equilibria. Ind. Eng. Chem. 38, 817-821. 

Chlorinated ethanes could be divided into two types, those that could carry the chlorine atom chain and those that could not. 1,2-Dichloroethane 1, 1,1,2-trichloroethane 10, 1,1,1-trichloroethane 11, 1,1,2,2-tetrachloroethane 12, 1,1,1,2-tetra-chloroethane 13, and 1,1,1,2,2-pentachloroethane 14 all decomposed with enhanced rates by a chlorine atom chain mechanism. Ethyl chloride and 1,1-dichloroethane 4 did not. The reason for the latter has been explained. Ethyl chloride gave likewise the radical 15 which could not carry the chain. In 1949, in a paper with the late Professor P. F. Onyon,7 the observations made up to that time were correlated and a number of predictions were made (Table 1). In later work all the predictions were shown to be true. 

Trichloroethane to HCI+dichloroethenes gas phase, flow (380-490) radical-chain -f unimolecular For overall 1st order reaction 4 = 8xl0 =34 644... 

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