Ethylene chlorohydrin




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Ethylene chlorohydrin determination sterilized polyvinyl chloride tubing

Time:2015/12/18 6:16:02

method of producing anhydrous ethylene chlorohydrin of high purity

Reactor of the first stage (R01) with ethylenechlorohydrine with uninterrupted reaction charge circulation is fed with dry hydrogen chloride and later ethylene oxide through mixer (Z01). Reaction heat is withdrawn by heat exchanger (E01). Simultaneously with te saturation by hydrogen chloride commences scrubbing of gases in absorber above (R01) by cooled raw ethylenechlorohydrine from the reactor of the second stage (R02) and ethylene oxide is fed into (R02) through mixer (Z03). Offgas from (R02) is fed into the bottom part of the second absorber. Countercurrently, it is scrubbed by raw ethylenechlorohydrine, saturated with hydrogen chloride, which goes out of (R01) across an overfall. Raw ethylenechlorohydrine is continually drawn off into the storage tank (H01) and therefrom it is led to rectification. Pure anhydrous product, ethylenechlorohydrine, is drawn off as distillate from the head of the rectification column

Ethylene chlorohydrin determination in ethylene oxide sterilized polyvinyl chloride tubing

A convenient rapid gas-chromatographic method is described for the quantitative determination of ethylene chlorohydrin. The method reported herein extracts the ethylene chlorohydrin with water. The method is simple and offers advantages since no elaborate and expensive gas extraction apparatus is required. The ethylene chlorohydrin levels in five different sterilized polyvinyl chloride samples were found to vary between 5 and 25 ppm. The effect of resterilization with ethylene oxide was investigated and was found to produce less ethylene chlorohydrin.