Abstract
AbstractMethods which have proved useful in the chemical and infra‐red examination of plasticizers used in polyvinyl chloride (PVC) compositions are summarized. Information is given about the method of isolation of the plasticizer and the qualitative tests which may be applied. On the quantitative side attention is given to the saponification value and the determination of phthalate, phosphate and chlorine. Methods which have proved useful in the isolation of the alcohols derived from ester‐type plasticizers are described.The infra‐red spectra of 19 common plasticizers are presented and the use of these spectra in the identification of plasticizers, and the qualitative and rough quantitative analysis of plasticizer mixtures is described. The examination by infra‐red spectroscopy of extracts from plasticizers, such as alcohols and unsaponifiable material, is described as an aid to identification of plasticizer mixtures.
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