cis-1,2-Dichloroethylene (CAS 156-59-2) — formula C2H2Cl2, molecular weight 96.94; category organic chemicals.
| CAS Number | 156-59-2 |
|---|---|
| Molecular Formula | C2H2Cl2 |
| Molecular Weight | 96.94 |
| Melting Point | -112.9 °F (NTP, 1992) |
| Boiling Point | 140 °F at 760 mmHg (NTP, 1992) |
| LogP | 1.9 |
| Applications | Uses: Used as a solvent and chemical intermediate, [ACGIH] Used as a refrigerant, degreaser, dry cleaning agent, and solvent for perfumes, adhesives, lacquers, oils, and resins, [HSDB] Only the trans isomer is commercially available in the US--used for precision cleaning of electronic components and a small amount used as a blowing agent for specialty foams, [EPA Toxicological Review, 2010], Metal Degreasing [Category: Clean], Semiconductor Manufacturing [Category: Industry], Painting (Solvents) [Category: Paint], Working with Glues and Adhesives [Category: Other], Dry Cleaning [Category: Clean], Plastic Composites Manufacturing [Category: Industry], Used as a solvent (fats, phenol, camphor, etc.) and as an intermediate, [Merck Index] Also used to make rubber, as a refrigerant, an additive to dye and lacquer solutions, to retard fermentation, and in medicines, perfumes, and thermoplastics, [NTP], Cis- and trans-isomers of 1, 2-dichloroethylene have had only limited use as solvents and chemical intermediates. Neither of the isomers has developed wide industrial usage in the USA partly because of their flammability., 1, 2-Dichloroethylenes can be used as solvent for waxes, resins, for the extraction of oil and fats from fish and meat, for vapor degreasing, as surface cleaning agent, for the extraction of rubber, as foam blowing additive, as refrigerant, in the manufacture of pharmaceuticals, and as source of HCl in silicone etching., 2-Dichloroethylenes, SOLVENT (AS ISOMERIC MIXT) FOR PERFUMES, DYES, & LACQUERS., SOLVENT (AS MIXT) FOR THERMOPLASTICS, FATS, & PHENOLS., For more Uses (Complete) data for cis-1, 2-Dichloroethylene (7 total), please visit the HSDB record page., Trans-1, 2-DCE is used as a solvent for waxes, acetylcellulose, dyes, thermoplastics, fats, and phenols. It is also used as an intermediate in the preparation of other chlorinated solvents. One may be exposed by breathing contaminated air, eating, or drinking the substance, or by skin contact (L585, L586)., Use Classification: Chemical Classes -> Volatile organic compounds, Industry Uses: Intermediate, Methods of Manufacturing: Dichloroethylenes (cis: [156-59-2], trans: [156-60-5]) often occur as an isomeric mixture during the production of chlorinated hydrocarbons, where they are produced by sidereactions, e.g., by thermal decomposition of 1, 2-trichloroethane or from acetylene by chlorine addition. The isomers can be separated by fractional distillation., In the thermal dehydrochlorination of 1, 2-trichloroethane, the 1, 2-dichloroethylenes are obtained together with the 1, 1-isomer. With increasing temperature, formation of the 1, 2-isomers increases. The trans isomer is preferentially formed. With catalysts, the individual ratios can be varied to some extent., The chlorination of acetylene with activated carbon catalyst yields almost exclusively the cis isomer. An excess of acetylene is required to suppress the formation of tetrachloroethane. Instead of carbon, mercury and iron salts can be used., U.S. Production: 2023: 50, 000 - <250, 000 lb, 2022: 250, 000 - <550, 2021: 50, 2020: <50, (1977) AT LEAST 5.0X10+8 G (CAPTIVE PRODN), Production volumes for non-confidential chemicals reported under the Inventory Update Rule.[Table#5491], General Manufacturing Information: All Other Basic Organic Chemical Manufacturing, Ethene, 2-dichloro-, (1Z)-: ACTIVE, Because of the relatively low demand for 1, 2- dichloroethylenes they are not deliberately produced in large quantities. They occur as byproducts in some processes, such as the production of vinyl chloride, trichloroethylene, and tetrachloroethylene and can be withdrawn and purified if required., The 1, 2-dichloroethylenes are commercially unimportant, because they do not polymerize, have relatively low boiling points, and can form explosive mixtures with air. In applications where dichloroethylenes could be used as solvents and for low temperature extraction processes, they have been replaced by methylene chloride, which has a higher solvency, is readily available, and is based on less expensive feedstocks., Trans isomer is more widely used in industry than either the cis isomer or the commercial mixture. |
| Category | Organic Chemicals |
Documented applications: Uses: Used as a solvent and chemical intermediate, [ACGIH] Used as a refrigerant, degreaser, dry cleaning agent, and solvent for perfumes, adhesives, lacquers, oils, and resins, [HSDB] Only the trans isomer is commercially available in the US--used for precision cleaning of electronic components and a small amount used as a blowing agent for specialty foams, [EPA Toxicological Review, 2010], Metal Degreasing [Category: Clean], Semiconductor Manufacturing [Category: Industry], Painting (Solvents) [Category: Paint], Working with Glues and Adhesives [Category: Other], Dry Cleaning [Category: Clean], Plastic Composites Manufacturing [Category: Industry], Used as a solvent (fats, phenol, camphor, etc.) and as an intermediate, [Merck Index] Also used to make rubber, as a refrigerant, an additive to dye and lacquer solutions, to retard fermentation, and in medicines, perfumes, and thermoplastics, [NTP], Cis- and trans-isomers of 1, 2-dichloroethylene have had only limited use as solvents and chemical intermediates. Neither of the isomers has developed wide industrial usage in the USA partly because of their flammability., 1, 2-Dichloroethylenes can be used as solvent for waxes, resins, for the extraction of oil and fats from fish and meat, for vapor degreasing, as surface cleaning agent, for the extraction of rubber, as foam blowing additive, as refrigerant, in the manufacture of pharmaceuticals, and as source of HCl in silicone etching., 2-Dichloroethylenes, SOLVENT (AS ISOMERIC MIXT) FOR PERFUMES, DYES, & LACQUERS., SOLVENT (AS MIXT) FOR THERMOPLASTICS, FATS, & PHENOLS., For more Uses (Complete) data for cis-1, 2-Dichloroethylene (7 total), please visit the HSDB record page., Trans-1, 2-DCE is used as a solvent for waxes, acetylcellulose, dyes, thermoplastics, fats, and phenols. It is also used as an intermediate in the preparation of other chlorinated solvents. One may be exposed by breathing contaminated air, eating, or drinking the substance, or by skin contact (L585, L586)., Use Classification: Chemical Classes -> Volatile organic compounds, Industry Uses: Intermediate, Methods of Manufacturing: Dichloroethylenes (cis: [156-59-2], trans: [156-60-5]) often occur as an isomeric mixture during the production of chlorinated hydrocarbons, where they are produced by sidereactions, e.g., by thermal decomposition of 1, 2-trichloroethane or from acetylene by chlorine addition. The isomers can be separated by fractional distillation., In the thermal dehydrochlorination of 1, 2-trichloroethane, the 1, 2-dichloroethylenes are obtained together with the 1, 1-isomer. With increasing temperature, formation of the 1, 2-isomers increases. The trans isomer is preferentially formed. With catalysts, the individual ratios can be varied to some extent., The chlorination of acetylene with activated carbon catalyst yields almost exclusively the cis isomer. An excess of acetylene is required to suppress the formation of tetrachloroethane. Instead of carbon, mercury and iron salts can be used., U.S. Production: 2023: 50, 000 - <250, 000 lb, 2022: 250, 000 - <550, 2021: 50, 2020: <50, (1977) AT LEAST 5.0X10+8 G (CAPTIVE PRODN), Production volumes for non-confidential chemicals reported under the Inventory Update Rule.[Table#5491], General Manufacturing Information: All Other Basic Organic Chemical Manufacturing, Ethene, 2-dichloro-, (1Z)-: ACTIVE, Because of the relatively low demand for 1, 2- dichloroethylenes they are not deliberately produced in large quantities. They occur as byproducts in some processes, such as the production of vinyl chloride, trichloroethylene, and tetrachloroethylene and can be withdrawn and purified if required., The 1, 2-dichloroethylenes are commercially unimportant, because they do not polymerize, have relatively low boiling points, and can form explosive mixtures with air. In applications where dichloroethylenes could be used as solvents and for low temperature extraction processes, they have been replaced by methylene chloride, which has a higher solvency, is readily available, and is based on less expensive feedstocks., Trans isomer is more widely used in industry than either the cis isomer or the commercial mixture..
cis-1,2-Dichloroethylene is a carbon-based organic compound with CAS registry number 156-59-2 and molecular formula C2H2Cl2 (molecular weight 96.94), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 156-59-2
Its molecular formula C2H2Cl2 comprises 2 C, 2 H, 2 Cl atoms.
Also known as: cis-1,2-Dichloroethylene · 顺式1,2-二氯乙烯
Category: organic chemicals
The CAS registry number of cis-1,2-Dichloroethylene is 156-59-2.
Molecular formula C2H2Cl2, molecular weight 96.94.
It is also registered under: cis-1,2-Dichloroethylene, 顺式1,2-二氯乙烯.
Recorded applications: Uses: Used as a solvent and chemical intermediate, [ACGIH] Used as a refrigerant, degreaser, dry cleaning agent, and solvent for perfumes, adhesives, lacquers, oils, and resins, [HSDB] Only the trans isomer is commercially available in the US--used for precision cleaning of electronic components and a small amount used as a blowing agent for specialty foams, [EPA Toxicological Review, 2010], Metal Degreasing [Category: Clean], Semiconductor Manufacturing [Category: Industry], Painting (Solvents) [Category: Paint], Working with Glues and Adhesives [Category: Other], Dry Cleaning [Category: Clean], Plastic Composites Manufacturing [Category: Industry], Used as a solvent (fats, phenol, camphor, etc.) and as an intermediate, [Merck Index] Also used to make rubber, as a refrigerant, an additive to dye and lacquer solutions, to retard fermentation, and in medicines, perfumes, and thermoplastics, [NTP], Cis- and trans-isomers of 1, 2-dichloroethylene have had only limited use as solvents and chemical intermediates. Neither of the isomers has developed wide industrial usage in the USA partly because of their flammability., 1, 2-Dichloroethylenes can be used as solvent for waxes, resins, for the extraction of oil and fats from fish and meat, for vapor degreasing, as surface cleaning agent, for the extraction of rubber, as foam blowing additive, as refrigerant, in the manufacture of pharmaceuticals, and as source of HCl in silicone etching., 2-Dichloroethylenes, SOLVENT (AS ISOMERIC MIXT) FOR PERFUMES, DYES, & LACQUERS., SOLVENT (AS MIXT) FOR THERMOPLASTICS, FATS, & PHENOLS., For more Uses (Complete) data for cis-1, 2-Dichloroethylene (7 total), please visit the HSDB record page., Trans-1, 2-DCE is used as a solvent for waxes, acetylcellulose, dyes, thermoplastics, fats, and phenols. It is also used as an intermediate in the preparation of other chlorinated solvents. One may be exposed by breathing contaminated air, eating, or drinking the substance, or by skin contact (L585, L586)., Use Classification: Chemical Classes -> Volatile organic compounds, Industry Uses: Intermediate, Methods of Manufacturing: Dichloroethylenes (cis: [156-59-2], trans: [156-60-5]) often occur as an isomeric mixture during the production of chlorinated hydrocarbons, where they are produced by sidereactions, e.g., by thermal decomposition of 1, 2-trichloroethane or from acetylene by chlorine addition. The isomers can be separated by fractional distillation., In the thermal dehydrochlorination of 1, 2-trichloroethane, the 1, 2-dichloroethylenes are obtained together with the 1, 1-isomer. With increasing temperature, formation of the 1, 2-isomers increases. The trans isomer is preferentially formed. With catalysts, the individual ratios can be varied to some extent., The chlorination of acetylene with activated carbon catalyst yields almost exclusively the cis isomer. An excess of acetylene is required to suppress the formation of tetrachloroethane. Instead of carbon, mercury and iron salts can be used., U.S. Production: 2023: 50, 000 - <250, 000 lb, 2022: 250, 000 - <550, 2021: 50, 2020: <50, (1977) AT LEAST 5.0X10+8 G (CAPTIVE PRODN), Production volumes for non-confidential chemicals reported under the Inventory Update Rule.[Table#5491], General Manufacturing Information: All Other Basic Organic Chemical Manufacturing, Ethene, 2-dichloro-, (1Z)-: ACTIVE, Because of the relatively low demand for 1, 2- dichloroethylenes they are not deliberately produced in large quantities. They occur as byproducts in some processes, such as the production of vinyl chloride, trichloroethylene, and tetrachloroethylene and can be withdrawn and purified if required., The 1, 2-dichloroethylenes are commercially unimportant, because they do not polymerize, have relatively low boiling points, and can form explosive mixtures with air. In applications where dichloroethylenes could be used as solvents and for low temperature extraction processes, they have been replaced by methylene chloride, which has a higher solvency, is readily available, and is based on less expensive feedstocks., Trans isomer is more widely used in industry than either the cis isomer or the commercial mixture..
Category: Organic Chemicals.
Independent reference data for cis-1,2-Dichloroethylene (CAS 156-59-2), compiled from public chemistry databases.
| CAS Registry Number | 156-59-2 |
|---|---|
| PubChem CID | 643833 |
| Molecular formula | C2H2Cl2 |
| IUPAC name | (Z)-1,2-dichloroethene |
| UNII (FDA) | FYO9G15JYD |
| Molecular Weight | 96.94 |
|---|---|
| XLogP3 | 1.9 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 95.9533555 |
| Monoisotopic Mass | 95.9533555 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 4 |
| Boiling Point | 140 °F at 760 mmHg (NTP, 1992) |
|---|---|
| Boiling Point | 60 °C |
| Boiling Point | BP: 58-60 °C |
| Boiling Point | 60.1 °C @760 [mm Hg] |
| Melting Point | -112.9 °F (NTP, 1992) |
| Melting Point | -80.0 °C |
| Melting Point | -80 °C |
| Flash Point | 39 °F (NTP, 1992) |
| Flash Point | 2 °C |
| Flash Point | 6.0 °C (42.8 °F) - closed cup |
CIS-1,2-DICHLOROETHYLENE; cis-1,2-Dichloroethene; 156-59-2; (Z)-1,2-Dichloroethylene; cis-Dichloroethylene; Acetalyne dichloride; Acetylene dichloride, cis-; Ethene, 1,2-dichloro-, (Z)-; Ethylene, 1,2-dichloro-, (Z)-; cis-1,2-dce; HCC 1130c; CCRIS 4605; HSDB 5656; R 1130c; NSC 6149; Ethene, 1,2-dichloro-, (1Z)-
| Reported hazard statements | H225, H332, H412, H315, H319, H336, H402, H341 |
|---|
H225: Highly Flammable liquid and vapor [Danger Flammable liquids]
H332: Harmful if inhaled [Warning Acute toxicity, inhalation]
cis-1,2-Dichloroethylene · CAS 156-59-2 · C2H2Cl2. UNII FYO9G15JYD. Boiling Point: 140 °F at 760 mmHg (NTP, 1992); Boiling Point: 60 °C; Boiling Point: BP: 58-60 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 顺式1,2-二氯乙烯