Description of CAS: 115-27-5 | Chlorendic anhydride
| CAS Number | 115-27-5 |
| EINECS Number | 204-077-3 |
| Molecular Formula | C9H2Cl6O3 |
| Molecular Weight | 370.83 |
| Boiling Point | 466ºC at 760 mmHg |
| Density | 1,73 g/cm3 |
| Flash Point | 200.8ºC |
| Purity | 97% |
| Package | 25g 100g 500g |
Synonyms：
Chlorendic Anhydride;
Het Anhydride;
1,4,5,6,7,7-Hexachloro-5-norbornene-2,3-dicarboxylic Anhydride;
4,5,6,7,8,8-Hexachloro-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione;
Application：
Chloropontic anhydride and chloropontic acid are reactive flame retardants suitable for unsaturated polyesters, polyurethanes and epoxies, and are also used as epoxy curing agents. The thermal deformation temperature of the epoxy resin products cured by the product is about 180℃, and the resistance is good, and chloropontic acid is also used as a dye intermediate and insecticide. It is also used as a flame retardant for fabrics. Used as a flame retardant curing agent for epoxy resins. The resin is cured while making it refractory. Refractory epoxy resin is used as a sealant for semiconductors. Used as curing agent of epoxy resin, reference dosage 100 ~ 110 mass parts. Curing conditions 2 h + 100 ℃ / 160 ℃ or 120 ℃ / 4 h / 2 h + 180 ℃ or 100 ℃ / 1/4 h h h + 200 ℃ to + 160 ℃ / 4/1 h. The cured material has excellent flame retardancy, electrical and mechanical properties, and excellent drug resistance. Thermal deformation temperature 181℃. Chloropneumatic anhydride and chloropneumatic acid can also be used as reactive flame retardants, suitable for polyester, polyurethane and unsaturated polyester. Chloroponic acid is a dyestuff intermediate and a flame retardant for pesticides and fabrics.
The production method is the reaction of hexachlorocyclopentadiene with maleic anhydride. Press hexachlorocyclopentadiene and maleic anhydride to 1: The molar ratio of 1.1 is mixed in the solvent chlorobenzene, and after the reaction at 140-145℃ for 7-8h, the reaction product is added to water for hydrolysis, and the hydrolyzed chloropontic acid obtained at 70℃ becomes an oil-like liquid, which is heated to 96-97℃ and miscible with water, and becomes Het acid[115-28-6] containing a crystal water after cooling. If the reaction product is crystallized with hot water and dilute acetic acid, and the monohydrate is dried at 100-105℃, chloropontic anhydride is obtained.
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