All notes
Plastics

Polycarbonate, PC

creativeMechanisms.com.

Is PC Toxic?

Polycarbonate are created by the combination of BPA and COCl2, however, there are BPA free polycarbonates that have become particularly marketable for applications involving perishable food or water.

Disadvantage:

Although Polycarbonate is known for its high impact resistance, it is very susceptible to scratching. For this reason, clear surfaces such as a polycarbonate lenses in a pair of glasses will typically be coated with a scratch-resistant layer for protection.