This test method covers the determination of trace impurities in 4,4 -Isopropylidenediphenol (BPA) by inverse gradient high performance liquid chromatography (HPLC).This method is applicable to BPA samples containing impurity concentration of 2 to 400mg/kg.
KeywordsBPA, 4,4 Isopropylidenediphenol, phenol, bisphenol A, high performance liquid chromatography, reverse-phase HPLC
BPA is used for production of polycarbonate or epoxy resin. The presence of impurities in BPA is undesirable because they may slow down the polymerization and be impurities in the final product. Determination of the trace impurities, such as isomer of BPA and the unreacted raw material, is often required. This test method is suitable for setting specifications and for using as an internal quality control where these products are produced or used
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Withdrawn From Balloting
Ballot Item Approved as D8266-2019 and Pending Publication