a database of the National Library of M

Inc., 1968.83]**PEER REVIEWED**The most important vinyl monomer; 18th highest-volume chemical produced inthe USA (1995). [Lewis, R.J., Sr (Ed.). Hawley's Condensed ChemicalDictionary. 13th ed. New York, NY: John Wiley & Sons, Inc. 1997.1169]**PEER REVIEWED**Dichloroethane used for pyrolysis to vinyl chloride must be of puritygreater than 99.5 wt % because cracking process is exceedingly susceptibleto inhibitors. It must also be dry to prevent corrosion. [Kirk-OthmerCondensed Encyc Chem Tech 1985 p.1230]**PEER REVIEWED**FORMULATIONS/PREPARATIONS:Grade: Technical, pure 99.9% [Lewis, R.J., Sr (Ed.). Hawley's CondensedChemical Dictionary. 13th ed. New York, NY: John Wiley & Sons, Inc.1997. 1169]**PEER REVIEWED**Vinyl chloride monomer is available commercially in cylinders or in bulkand is generally supplied as a liquid under pressure. [IARC. Monographs onthe Evaluation of the Carcinogenic Risk of Chemicals to Man. Geneva: WorldHealth Organization, International Agency for Research on Cancer,1972-PRESENT. (Multivolume work).V7 292 (1974)]**PEER REVIEWED**Liquefied gas, polymer grade [Kuney, J.H. and J.N. Nullican (eds.)Chemcyclopedia. Washington, DC: American Chemical Society, 1988.122]**PEERREVIEWED**IMPURITIES:Commercial grade contains 1-2% impurities: water, non-volatile residues,acetaldehyde, hydrogen chloride, hydrogen peroxide, and methyl chloride.[International Labour Office. Encyclopedia of Occupational Health andSafety. Vols. I&II. Geneva, Switzerland: International Labour Office,1983.2256]**PEER REVIEWED**Specifications for a typical commercial product call for maxima in mg/kgby weight of the following impurities: unsaturated hydrocarbons - 10;acetaldehyde - 2; dichloro compounds - 16; water - 15 ; hydrogen chloride- 2; nonvolatiles - 200; iron - 0.4. Phenol at levels of 25-50 mg/kg byweight is used as a stabilizer to prevent polymerization. [IARC.Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Man.Geneva: World Health Organization, International Agency for Research onCancer, 1972-PRESENT. (Multivolume work).V7 292 (1972)]**PEER REVIEWED**The impurities /of vinyl chloride are as follows:/ acetic aldehyde 5 ppm,butane 8 ppm, 1,3-butadiene 10 ppm, chlorophene 10 ppm, diacetylene 4 ppm,vinyl acetylene 10 ppm, propine 3 ppm, methylchloride 100 ppm. [Hiatt HHet al; Origins of Human Cancer Book A: Incidence of Cancer in Humans Vol#4 p.120 (1977)]**PEER REVIEWED**CONSUMPTION PATTERNS:MONOMER FOR POLY(VINYL CHLORIDE) RESINS, 85%; EXPORTS, 13.5%;MISCELLANEOUS (MOSTLY COPOLYMER USE), 1.5% (1982) [SRI]**PEER REVIEWED**95% FOR POLYVINYL CHLORIDE HOMOPOLYMER AND COPOLYMER RESIN; 4% FORSYNTHESIS OF METHYL CHLOROFORM; 1% FOR MISC APPLICATIONS (1972)[SRI]**PEER REVIEWED**