Bisphenol A: Characteristics
Why optical polycarbonate needs the purest grade
What this tab covers The physical and chemical properties that set its grade, price and uses, with the commercial grades and the standards that define them.Purity and colour decide whether BPA can make optical polycarbonate. Isomer and phenol content matter for epoxy.
Properties that matter commercially
| Property | Value / specification | Why it matters | Source |
|---|---|---|---|
| Purity (p,p-BPA) | at least 99.9% for polycarbonate grade (indicative) | Optical clarity and colour | indicative |
| Free phenol | typically below 50 ppm in PC grade (indicative) | Polymer quality | indicative |
| Melting point | about 156-158 C | Solid handling | standard data |
Commercial grades
- Polycarbonate grade
- Epoxy grade