Propylene Chlorohydrin Determination

Propylene Chlorohydrin Determine the residual propylene chlorohydrin in hydroxypropyl starch, hydroxypropyl starch phosphate, and oxidized hydroxypropyl starch as directed under Propylene Chlorohydrin, Appendix X. 

Calculation Prepare a standard curve for the summed signal areas for each of the controls against the calculated propylene chlorohydrin concentrations, in mg/kg, derived from the actual weight of chlorohydrin isomers used. Using the summed signal areas corresponding to the l-chloro-2-propanol and 2-chloro-1 -propanol from the sample, determine the concentration of mixed propylene chlorohydrins, in mg/kg, in the sample by reference to the calibration plot. 

This method can be used, after hydrolysis, for the determination of ethylene znd propylene chlorohydrine. ... 

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