1,1,1-Trichloroethane methyl chloroform

Chlorination of various hydrocarbon feedstocks produces many usehil chlorinated solvents, intermediates, and chemical products. The chlorinated derivatives provide a primary method of upgrading the value of industrial chlorine. The principal chlorinated hydrocarbons produced industrially include chloromethane (methyl chloride), dichloromethane (methylene chloride), trichloromethane (chloroform), tetrachloromethane (carbon tetrachloride), chloroethene (vinyl chloride monomer, VCM), 1,1-dichloroethene (vinylidene chloride), 1,1,2-trichloroethene (trichloroethylene), 1,1,2,2-tetrachloroethene (perchloroethylene), mono- and dichloroben2enes, 1,1,1-trichloroethane (methyl chloroform), 1,1,2-trichloroethane, and 1,2-dichloroethane (ethylene dichloride [540-59-0], EDC). 

Methyl chloroform, see 1,-1,-1 -Trichloroethane Methyl chloroformate Methyl cyanide, see Acetonitrile Methyl cyclohexane c-Methyl cyclohexanol 2-Methyl cyclohexanone... 

Trichlorobenzene 1,1,1-Trichloroethane (Methyl chloroform) t, 1,2-T richloroethane Trichloroethylene Trichloroisocyanuric acid... 

Criteria for a Recommended Standard...Occupational Exposure to 1,1,1-Trichloroethane (Methyl Chloroform), DHEW (NIOSH) Publication No. 76-184, February 1979, (IARC). 

In your kitchen (T= 25°C) you drop a small bottle with 20 mL of the solvent 1,1,1-trichloroethane (methyl chloroform, MCF) that you use for cleaning purposes. The bottle breaks and the solvent starts to evaporate. The doors and the windows are closed. On your stove there is an open pan containing 2 L of cold olive oil. Furthermore, on the floor there is a large bucket that is filled with 50 L of water. The air volume of the kitchen is 30 m3. Calculate the concentration of MCF in the air, in the water in the bucket, and in the olive oil at equilibrium by assuming that the adsorption of MCF to any other phases/surfaces present in the kitchen can be neglected. Consider MCF as an apolar compound. You can find some important physical-chemical data in Appendix C and in Fig. 6.7. Comment on any assumption that you make. 

Calculate the total air-water transfer velocity, v/aAv, of 1,1,1-trichloroethane (methyl chloroform, MCF) and tribromomethane (bromoform, BF) at the surface of the ocean for a wind speed of 15 m s 1 measured 3 m above the water surface at seawater temperatures of 25°C and 0°C, respectively. 

These agents find wide use as industrial solvents, degreasing agents, and cleaning agents. The substances include carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene (perchloroethylene), and 1,1,1-trichloroethane (methyl chloroform). See Table 57-1 for recommended threshold limit values. 

EPA. 1985b. Health assessment document for 1,1,1-trichloroethane (methyl chloroform). Final... 

Volatile Organic Compound (VOC), means any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, which participates in atmospheric photochemical reactions. This includes any such organic compound other than the following, which have been determined to have negligible photochemical reactivity Methane ethane methylene chloride (dichloro-methane) 1.1.1-trichloroethane (methyl chloroform) l.l.l-trichloro-2.2.2-trifluorethane (CFC-113), furthermore cyclic, branched or linear completely methylated siloxanes acetone and perfluorocarbon compounds. 

Environmental pressures like the stratospheric ozone depletion issue has forced the phasing out of certain halogenated solvents. For years, 1,1,1-trichloroethane (methyl chloroform) solvent has been a widely-used cold cleaning solvent and a popular vapor degreasing solvent. The other solvent being removed from the cleaning process because of the ozone depletion issue is... 

Warning Trichloroethylene should be used only if absolutely necessary since it is more toxic than 1,1,1 -trichloroethane (methyl chloroform). 

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