1,1-Dichloroethene

1,1-Dichloroethene (CAS 25323-30-2) — formula C2H2Cl2, molecular weight 96.94; category organic chemicals.

Specifications

Where it is used

Documented applications: Uses: Vinylidene chloride is used as an intermediate for organic chemical synthesis. These copolymers are also used extensively in many types of packing materials, as flame retardant coatings for fiber and carpet backing and in piping, coating for steel pipes, and adhesive applications., Used as co-monomer in production of polymers for coatings, films, lacquer resins, and flame resistant binders in carpet backing, [ACGIH], For 1, 1-dichloroethylene (USEPA, OPP Pesticide Code: 600033) there are 0 labels match., SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., Copolymerized with vinyl chloride or acrylonitrile to form various kinds of Saran. Other copolymers are also made. Adhesives, component of synthetic fibers., Vinylidene chloride is a basic material for poly(vinylidene chloride) or its copolymers with vinyl chloride, acrylonitrile, methacrylonitrile, and methacrylate. With these materials, barrier layers for food packaging are formed as well as laminated and polymer sandwich type films. ... The production of HFC-142b, a feedstock for fluoropolymer production, is another major use of VDC., ... Unisolated intermediate in the production of 1, 1, 1-trichloroethane., VDC is produced solely for use as a chemical intermediate primarily in the production of polyvinylidene polymers, copolymer and terpolymers. Another key application is in the production of chloroacetyl chloride. It is also used in the production of a hydrofluorocarbon., 1-Dichloroethene is used in the production of certain plastics as a comonomer in the polymerization of vinyl chloride, and acrylates. It is also used to make flame retardant coatings for fiber and carpet backings, and in piping, and in adhesive applications. (L185, T14), Use Classification: Chemical Classes -> Volatile organic compounds, Industry Uses: Intermediate, Methods of Manufacturing: 1, 1-Dichloroethylene is almost exclusively produced from 1, 2-trichloroethane that is made from 1, 2-dichloroethane or vinyl chloride. ... 1, 2-Trichloroethane is converted to vinylidene chloride by dehydrochlorination, which can be carried out by two routes: 1. Liquid-phase dehydrochlorination in the presence of alkali, e.g., NaOH, and, 2. Pyrolytic gas-phase cracking at elevated temperatures. ... The latter route has the advantage that valuable chlorine is recovered as hydrogen chloride, which can be used again for oxychlorination processes. By this route, however, vinylidene chloride selectivity is low, because the formation of 1, 2-dichloroethylenes is favored. In the liquid phase reaction, vinylidene chloride selectivity is well above 90%, hydrogen chloride is lost as a salt., Preparation from ethylene chloride: Reilly, United States of America patent 2140548 (1938 to Dow), by dechlorination of 1, 2-trichloroethane: Conrad, Gould, United States of America patent 2989570 (1961 to Ethyl Corp)., Impurities: A typical analysis of commercial-grade vinylidene chloride monomer (excluding inhibitors) is as follows: vinylidene chloride 99.8%, trans-1, 2-dichloroethylene 900 ppm, vinyl chloride 800 ppm, 1-trichloroethane 150 ppm, cis-1, 2-dichloroethylene 10 ppm, and 1, 1-dichloroethane, ethylene chloride, and trichloroethylene, each less than 10 ppm., Dichloroacetylene has been reported to be an impurity in some commercial samples of vinylidene chloride., Commercial product contains small proportion of inhibitor., Formulations, Preparations: Liquid grade, Consumption Patterns: Virtually all of the vinylidene chloride produced is used in the production of copolymers with vinyl chloride or acrylonitrile. A small percentage (4%) of vinylidene chloride is used as chemical intermediates (1985)., U.S. Demand: 68, 000 tonnes in 1987, was projected to be 79, 000 tonnes in 1992, Of all important chloroethanes and -ethylenes, vinylidene chloride has presently the smallest sales volume. Because of its unique applications in polymers for food containers, long-term demand will grow., The annual production rate for the Western World amounts to about 150, 000-200, 000 tonnes, of which ca. 120, 000 tonnes are used for poly(vinylidene chloride) and its copolymers. The rest is converted to 1, For more Consumption Patterns (Complete) data for 1, 1-Dichloroethylene (6 total), please visit the HSDB record page., U.S. Production: 2023: 4, 000, 000 - <5, 500, 000 lb, 2022: 10, 000 - <25, 2021: 7, 000 - <8, 2020: 55, 000 - <70, (1977) 9.1X10+10 G MIN-MAY INCL CAPTIVE PRODN, (1980) 7.8X10+10 G (EST, EXCL CAPTIVE PRODN), (1985) 8.08X10+10 g (capacity), An estimated 90700 tons, yr of the monomer were produced in the USA during the early 1980s., For more U.S. Production (Complete) data for 1, 1-Dichloroethylene (8 total), U.S. Imports: (1977) 1.63X10+7 G, (1982) 4.60X10+5 G, (1984) 1.81X10+7 g, (1986) 2.17X10+8 lb, (1998) 21 million pounds, (1999) 72 million pounds, U.S. Exports: (1998) 1.979 billion pounds, (1999) 2.481 billion pounds, General Manufacturing Information: All Other Basic Organic Chemical Manufacturing, Ethene, 1-dichloro-: ACTIVE, Vinylidene chloride is less stable than most other chloroethylenes because it is very susceptible to both oxidation and polymerization. To avoid these reactions, oxygen scavengers, such as amino and sulfur compounds or phenol derivatives must be added as stabilizers, The monomethyl ether of hydroquinone is added to commercial grades of vinylidene chloride as an inhibitor..

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What this product is

1,1-Dichloroethene is a carbon-based organic compound with CAS registry number 25323-30-2 and molecular formula C2H2Cl2 (molecular weight 96.94), belonging to the organic chemicals segment of chemical raw materials.

Identification

CAS number: 25323-30-2

Its molecular formula C2H2Cl2 comprises 2 C, 2 H, 2 Cl atoms.

Also known as: 1,1-Dichloroethene · Dichloroethene

Category: organic chemicals

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