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Ethyl chloroacetate (chloroacetic acid ethyl ester), also known as ethyl chloroacetate, has a molecular formula of C 4 H 7 CIO 2 , a molecular weight of 122.
55, and a structural formula of
1.
Product performance
Colorless and transparent liquid; flammable; highly toxic; steam has anesthetic effect, irritating eyes, skin and mucous membranes, and damages the liver and blood; insoluble in water, soluble in ethanol , ether and benzene; in hot water and Easy to decompose in alkali; freezing point -26℃; boiling point 145~146℃, 52℃ (2.
67kPa), relative density (d 4 20 ) 1.
1585, refractive index (n D 20 ) 1.
4227, flash point 54℃
.
2.
Production principle
It is obtained by direct esterification of chloroacetic acid and absolute ethanol
.
3.
Process flow
4.
Technical formula (kg/t)
5.
Main equipment
Esterification reactor, fractionation column, ethanol storage tank, distillation kettle (vacuum pump)
.
6.
Production process
Put 950 kg of chloroacetic acid and 217 kg of anhydrous ethanol into the esterification reactor, and heat to reflux with stirring.
At the same time, the by-product water is separated through a fractionating column and the ethanol is distilled out
.
After refluxing for 2 hours, 217 kg of absolute ethanol and the distilled ethanol were added to perform the second reflux reaction
7.
Product Standard
8.
Product use
Used as a synthetic raw material for medicine and perfume, also used in organic synthesis, and can also be used as a solvent
.
9.
Safety measures
(1) The chloroacetic acid used in the production is an organic drug, which is a secondary organic acid corrosive substance, and anhydrous ethanol is flammable
.
The equipment should be sealed to prevent leakage, the operator should wear labor protection equipment, and pay attention to ventilation and fire prevention in the workshop
(2) This product is toxic and flammable
.
Packed in glass bottles and stored in a cool, dry place
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