Phosphorochloridic acid, dimethyl ester
dimethyl chlorophosphate
CAS: 813-77-4
Molecular Formula: C2H6ClO3P
Phosphorochloridic acid, dimethyl ester - Names and Identifiers
| Name | dimethyl chlorophosphate |
| Synonyms | dimethyl chlorophosphate Methyl phosphorochloridate dimethyl phosphorochloridate Phosphorochloridic acid, dimethyl ester |
| CAS | 813-77-4 |
| InChI | InChI=1/C2H6ClO3P/c1-5-7(3,4)6-2/h1-2H3 |
Phosphorochloridic acid, dimethyl ester - Physico-chemical Properties
| Molecular Formula | C2H6ClO3P |
| Molar Mass | 144.494 |
| Density | 1.315g/cm3 |
| Boling Point | 162.7°C at 760 mmHg |
| Flash Point | >230 °F |
| Vapor Presure | 2.8mmHg at 25°C |
| Refractive Index | 1.398 |
| Physical and Chemical Properties | Use O,O-dimethyl phosphoryl chloride is used in the synthesis of organophosphorus insecticide methyl thiophosphorus on pesticides. |
Phosphorochloridic acid, dimethyl ester - Risk and Safety
| Hazard Symbols | T+ - Very toxic |
| Risk Codes | R26/27/28 - Very toxic by inhalation, in contact with skin and if swallowed. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S7/9 - |
| UN IDs | UN 2927 6.1/PG 1 |
| WGK Germany | 3 |
| HS Code | 29199000 |
Phosphorochloridic acid, dimethyl ester - Upstream Downstream Industry
Phosphorochloridic acid, dimethyl ester - Production method
The production of dimethyl phosphite chlorination is generally used in China, that is, dimethyl phosphite is prepared by the reaction of phosphorus trichloride and methanol, and then chlorinated with chlorine.
Under the condition of vacuum degree> 86.7 kPa, phosphorus trichloride and methanol are mixed and reacted in a certain proportion, and the by-products chloromethane and hydrogen chloride gas are separated, deacidification is removed, and the film is deacidification again at a higher temperature. Cooling to obtain dimethyl phosphite. After content analysis, chlorine gas is introduced in a certain proportion under high vacuum conditions to obtain the product. The total yield of esterification and chlorination is above 90%.
This product is a colorless transparent liquid, decomposed in water, soluble in alcohol, benzene, carbon tetrachloride and other organic solvents.
Last Update：2024-04-10 22:29:15
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