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  • Title: Oligomers in plastics packaging. Part 1: Migration tests for vinyl chloride tetramer.
    Author: Castle L, Price D, Dawkins JV.
    Journal: Food Addit Contam; 1996 Apr; 13(3):307-14. PubMed ID: 8718745.
    Abstract:
    Vinyl chloride (VC) tetramer has been studied as a representative oligomer that has the potential for migration from plastics packaging. Poly(vinyl chloride) (PVC) bottles for retail beverages were analysed by a process of dissolution followed by gas chromatography. Tetramer levels ranged from 70 to 190 mg/kg in the plastic. When these bottles were tested for migration into the simulants distilled water, 3% acetic acid, 15% ethanol and olive oil, no tetramer migration was detected at a limit of 5-10 micrograms/kg. Since, of the low molecular weight oligomers, the tetramer had the highest concentration in the PVC plastics, it is concluded that the other VC oligomers of higher molecular weight, would not migrate above this limit of detection either.
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