Molecular Formula | C2H4Cl2O2 |
Molar Mass | 112.94 |
Density | 1.635±0.06 g/cm3(Predicted) |
Melting Point | 56°C |
Boling Point | 121 °C |
pKa | 10.97±0.41(Predicted) |
Storage Condition | 2-8℃ |
MDL | MFCD00150652 |
Risk Codes | 34 - 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. |
UN IDs | 3261 |
Hazard Class | 8 |
Packing Group | III |
Dichloroacetaldehyde is a liquid with strong tear gas. Molecular weight 112.95. Boiling point 90~91 ℃. Gradually self-polymerized during storage to form a white amorphous powdery polymer. The polymer is insoluble in alcohol and can be depolymerized at 120°C. This product is dissolved in water to form hydrate, dissolved in alcohol to form hemiacetal. There is strong irritation. Used in the synthesis of pesticides, drugs, etc. It is obtained by chlorination of acetaldehyde or trimeric acetaldehyde. Dichloroacetaldehyde (hereinafter abbreviated as DCA) is a compound that can be used as a raw material for synthetic drugs and agricultural chemicals. Because this compound is extremely unstable, it is provided in the form of dichloroacetaldehyde, hydrate. In the past, hydrates of DCA were produced by chlorination of 1, 2-dichloroethylene using, for example, the method described in DeutscheOffenlegungsschrift2306335. The method is currently no longer implemented because 1,2-dichloroethylene is only difficult. On the other hand, chloral is made by acetaldehyde or chlorination of aldehydes. DCA is known to be produced during this chlorination process. However, this process cannot produce DCA alone; DCA is obtained together with monochloroacetaldehyde and chloral, and the degree of chlorination is different from the degree of chlorination of DCA. The boiling points of these acetaldehyde chloride compounds are very close to each other. No method can effectively separate DCA from the mixture. For this reason, the production of DCA by chlorination of acetaldehyde or para-aldehyde has not been implemented.