: an isomer that is a stereoisomer of a compound having two or more chiral centers and that is not a mirror image of another stereoisomer of the same compound â
A compact disc is a deceptively simple looking device considering the technology required to make it. 1  CDs consist of three layers of materials: 2  A base layer made of a polycarbonate plastic. 3  A thin layer of aluminum coating over the polycarbonate plastic. 4  A clear protective acrylic coating over the aluminum layer.
Cellulose acetate is hypoallergenic, made from a renewable resource, lightweight, and very strong. It is made from cutting, forming and polishing sheets of plastic. Cellulose acetate is the highest quality plastic material for eyeglasses.As the name implies, injection mold frames are made by injecting a more brittle petroleum based plastic that is liquified, then injected into an aluminum or stainless steel mold.ellulose acetate is a non-petroleum based plastic that is made from natural cotton and wood fibers. While petroleum products can be more expensive and harmful to the environment, cellulose acetate is made from renewable materials.