Additives in Polyvinyl Chloride and Polyvinylidene Chloride Products

The residue of 89 kinds of additives including plasticizers in polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC) products were investigated. PVC wrapping films contained 14-38% of plasticizers, most of which were adipates, especially diisononyl adipate. However, few additives were observed in PVC containers. PVC gloves contained 34-55% of plasticizers, mostly di-2-ethylhexyl phthalate and di-2-ethylhexyl adipate, in all samples. The levels of plasticizers in toys were 8.7-45%, consisting mainly of diisononyl phthalate and di-2-ethylhexyl phthalate. On the other hand, the levels of plasticizers in PVDC wrapping films were only 2.7-7.8% (O-acetyl tributyl citrate and dibutyl sebacate). Nonylphenol was found in some PVC wrapping films, gloves and toys at concentrations of about 530-5, 500μg/g sample.