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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
Viscosity @ 25°C 50 - 100 cP ASTM D-445
Weight per Epoxide 1700 - 2300 g/eq ASTM D-1625

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