Methylene chloride Dichloromethane

Normal /, /i -Oxydipropionitrile Carbowax (400, 600, 750, etc.) Glycols (ethylene, diethylene) Cyanoethylsilicone Saturated hydrocarbons, e.g. hexane, heptane aromatic solvents, e.g. benzene, xylene saturated hydrocarbons mixed with up to 10 per cent dioxan, methanol, ethanol, chloroform, methylene chloride (dichloromethane)... 

Methylene bisphenyl isocyanate (MDI) Methylene chloride (dichloromethane) 1 CT... 

Chlorophenyl phenyl ether 4-Bromophenyl phenyl ether Bis(2-chloroisopropyl)ether Bis(2-chloroethoxy)methane Methylene chloride (dichloromethane)... 

Methylene chloride (dichloromethane) 4,4 -Methylene bis (2-chloraniline) (MOCA) Methyl ethyl ketone (MEK), see 2-Butanone CT ST... 

The red and orange forms of RhCl[P(C6H5)3]3 have apparently identical chemical properties the difference is presumably due to different crystalline forms, and possibly bonding in the solid. The complex is soluble in chloroform and methylene chloride (dichloromethane) to about 20 g./l. at 25°. The solubility in benzene or toluene is about 2 g./l. at 25° but is very much lower in acetic acid, acetone, and other ketones, methanol, and lower aliphatic alcohols. In paraffins and cyclohexane, the complex is virtually insoluble. Donor solvents such as pyridine, dimethyl sulfoxide, or acetonitrile dissolve the complex with reaction, initially to give complexes of the type RhCl[P(C6H6)3]2L, but further reaction with displacement of phosphine may occur. 

Flexachlorocyclohexane Lindane Flexachloroethane Flexafluoroethane Methyl Bromide Bromomethane Methylene Chloride Dichloromethane Saturated Alkyl Flalides Tetrachloroethane, 1,1,2,2 Trichloroethane, 1,1,2 Trichloroethane, 1,1,1 TCA... 

Methyl Bromide Bromomethane under Saturated Alkyl Halides Methyl Cyclohexane under Alkanes and Cyclic Alkanes Methylene Chloride Dichloromethane under Saturated Alkyl Halides Methyl Hydrazine Monomethylhydrazine under Hydrazine Derivatives Methyl Methacrylate under Esters... 

ECETOC (1988) Methylene Chloride (Dichloromethane) Human Risk Assessment using Experimental Animal Data (Technical Report No. 32), European Centre for Ecotoxicology and Toxicology of Chemicals... 

Paint strippers are also formulated to have high viscosity, otherwise they run olf vertical surfaces and thereby fail to penetrate or solubilise the paint to which they have been applied. Hydroxypropyl methylcellulose is the main thickener for paint strippers, which use methylene chloride (dichloromethane) as the principal component. Hydroxypropyl methylcellulose is useful for this purpose because it is soluble in the organic component but is not sensitive to the presence of any water that may also be present in the paint stripper. 

Bis(triphenylphosphine)chlorodinitrosylruthenium(l -t- )tetrafluoroborate is an orange crystalline solid (m.p. 196°), which is moderately stable in air (decomposition over a period of several weeks is noted). The complex is very soluble in methanol, methylene chloride (dichloromethane), acetone, dimethyl-formamide, and acetonitrile. Its solutions are unstable to the air. It is insoluble in ether and hexane and only slightly soluble in benzene. 

The ether solutions are combined, and the solution is dried over 100 g. of calcium chloride for at least 3 hours. The purple solution is filtered and then evaporated in a rotating evaporator to a syrupy residue. The tarry red residue is dissolved in 100 ml. of hot (70°) benzene. The benzene solution is allowed to cool and is then poured onto a chromatographic column (approximately 35 X 300 mm.) packed under benzene with 50 g. of activated aluminum oxide. A dark violet band is rapidly eluted from the column with methylene chloride (dichloromethane). Evaporation of the violet methylene chloride solution yields 2.2 to 2.8 g. of purple crystals (20 to 26%) m.p. 182 to 183°. 

The crude product is dissolved in the minimum quantity of benzene and is placed on an alumina-filled column about 60 cm. in length and 5.5 cm. in diameter prepared by packing it, under benzene, with 60 g. of Merck alumina per gram of crude crystalline product. Elution with 1 1 (by volume) methylene chloride (dichloromethane)-benzene mixture removes a red band a second band is eluted from the column by methanol. Evaporation of the solvent from each of these fractions affords the red crystalline isomers, t... 

In the early 1980s, when it appeared that hexane was in short supply, Johnson et al. described a 56-h pilot plant extrachon of cottonseed using an alternative solvent, methylene chloride (dichloromethane) (158). This solvent extracted the oil and signihcantly reduced levels of the antinutrients gossypol and aflatoxin. However, because of environmental concerns, the commercial use of halogenated hydrocarbons in solvent extraction has not occurred. 

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