Preparation method and storage requirements of dichloroacetic acid

Dichloroacetic acid, colorless liquid.It has a pungent smell.It crystallizes at low temperature and has two crystalline forms.Can be miscible with water, ethanol, ether.Store in a cool, ventilated warehouse.Keep away from fire and heat and keep container sealed.

Dichloroacetic acid should also be stored separately with oxidizer, alkali and reducing agent.Equipped with the corresponding varieties and quantity of fire equipment.The storage area shall be equipped with emergency spill treatment equipment and appropriate storage materials.It is used as an organic synthesis intermediate for preparing methyl dichloroacetate (chloramphenicol intermediate), medical allantoin and cationic dye.Also used as a corrosive.It is also used in organic synthesis and pharmaceutical manufacturing.

Preparation of dichloroacetic acid
1. Recovery method of acetic acid chlorinated mother liquor: chlorinated acetic acid mother liquor was obtained from acetic acid chlorinated mother liquor, which was chlorinated under sulfur catalysis and obtained by distillation.
2. Trichloroacetaldehyde method: trichloroacetaldehyde was obtained by cyanidation, dehydrochlorination and hydrolysis.
3.Acetic acid:It is obtained by chlorination of acetic acid catalyzed by iodine.

• Storage requirements for dichloroacetic acid
  Dichloroacetic acid needs to be stored in a cool, ventilated warehouse.Keep away from fire and heat.Keep container sealed.Should be stored separately with oxidizer, alkali, reducing agent, avoid mixing storage by all means.Equipped with the corresponding varieties and quantity of fire equipment.The storage area shall be equipped with emergency spill treatment equipment and appropriate storage materials.

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