Organic liquids tetrachloromethane

In certain cases the organic dibasic acid is not sufficiently reactive for the purpose of polymerisation, and so it is replaced either with its anhydride or its acid chloride. For example polyamides (nylons) are often prepared by reaction of the acid chloride with the appropriate diamine. In the spectacular laboratory prepatation of nylon 6,6 this is done by interfacial polymerisation. Hexamethylenediamine is dissolved in water and adipyl chloride in a chlorinated solvent such as tetrachloromethane. The two liquids are added to the same beaker where they form two essentially immiscible layers. At the interface, however, there is limited miscibility and nylon 6,6 of good molar mass forms. It can then be continuously removed by pulling out the interface. 

The mixture of chromium trioxide with one equivalent of trimethylsilyl chloride, with no solvent added, results in the formation of an explosive red liquid that is soluble in dichloromethane or tetrachloromethane.428 It is suggested, with no spectroscopic evidence, that it consists of trimethylsilyl chlorochromate [Me3Si-0-Cr(0)2-Cl]. This compound, which can safely be used in organic solvents, is able to oxidize alcohols to aldehydes or ketones, and interacts with r-butyldimethylsilyl ethers producing deprotection, followed by oxidation of the liberated alcohol.138 Compounds analogue to trimethylsilyl chlorochromate are also able to oxidize alcohols, although they possess lesser reactivity. They can be prepared by reaction of chromium trioxide with dimethyldichlorosilane and diphenyldichlorosilane.428b... 

Synonyms tetrachloromethane, tetrachlorocarbon Formula CC14 MW 153.81 CAS [56-23-5] used as a solvent colorless liquid with characteristic odor boils at 76.7°C freezes at -23°C vapor pressure 89.5 torr at 20°C density 1.59 g/mL at 20°C shghtly soluble in water ( 800 mg/L) miscible with organic solvents. 

A mixture of 8 mL tetrachloromethane, 8 mL acteone and 1 mL of preextracted water was added to aliquots of 20 to 170 mg of pre-extracted or pre-extracted/saponified samples. In addition, 1500 mg sodium peijodate and 10 mg of ruthenium(IV)oxide were added and the reaction mixture was stirred for 4 h in darkness. The reaction was stopped by addition of 50pL of methane and 2 drops of concentrated sulphuric acid. The liquid phase was separated by decantation and the residue was washed twice with tetrachloromethane. The combined organic layers were collected in a separately funnel and washed with 5 ml. of pre-extracted water as well as 1 mL of a sodium thiosulfate solution. All water layers were combined and re-extracted five times with 10 ml. of diethylether. The diethylether solution was added to the organic solution, the extract was dried with anhydrous granulated sodium sulphate and concentrated to a volume of 0.5 mL prior to fractionation. 

Matteoh, E. Lepori, L. Isothermal liquid-vapor equilibria of mixtures containing organic compounds. 2. Excess Gibbs free energies of a hydrocarbon or tetrachloromethane + a cyclic ketone at 298.15 K 7. Chem. Eng. Data 1988,33, 247-250... 

Cocero, M. J. Mato, F. Garcia, Cobos, J. C. Kehiaian, II. V. Thermodynamics of binary mixtures conteiining organic carbonates. Isotherm vapor-liquid equilibria for dimethyl carbonate -1- cyclohexane, + benzene, or-H tetrachloromethane J. Chem. Eng. Data 1989,34, 73-76... 

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