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Bisphenol A-157


Bisphenol A (BPA) is a difunctional phenolic compound produced by the condensation of acetone and phenol. The polycarbonate grade (BPA-157) is essentially 2,2-bis (p-hydrox­yphenyl) propane (see formula below) with only trace amounts of other isomers.


BPA 157 Structure


Polycarbonate Grade Bisphenol A is a white flaked solid of high purity used as a major ingre­dient in high molecular weight linear polymers such as polycarbonates and polyesters.

Sales Specification

Property Standard Value Unit Test Method
Color < 200 Pt-Co ASTM D1209
Free Phenol < 0.05 [500] % weight [mg/kg]
Freezing Point > 156.5 °C ASTM D-1493
Iron Content < 0.5 mg/kg

a Color determined by platinum-cobalt method via absorbance of a solution containing 50 grams of BPA in 70 grams of methanol.

Typical Properties

Property Standard Value Unit Test Method
Bulk Density 35 - 41 lb/ft³
Solubility In Water slight
Specific gravity @ 25/25ºC 1.195
Vapor Pressure at 25°C negligible mm Hg

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