Technical Bulletin No. 0647: Evaluation of XAD-2 Sorbent Tubes and Detector Tubes for Determination of Epichlorohydrin and By-Products of Epichlorohydrin-Polyamide Resins in Workpl

Epichlorohydrin-based polyamide (PAE) resin formulations may contain small amounts of free epichlorohydrin (Epi) and possibly 1,3-dichloro-2- propanol (1,3-DCP) and 3-chloro-1, 2-propanediol (CPD) which occur as hydrolysis and/or by-products in the synthesis of the resin. Epi and 1,3-DCP may vaporize into workplace air. A previous method utilizing collection onto Tenax-GC sorbent tubes lacked sufficient capacity for Epi under some conditions. An improved sampling procedure for determining concentrations of Epi and 1,3-DCP in workplace air was therefore developed and evaluated.