dimethylsiloxane, carboxymethyl copolymer is a chemical compound registered under CAS number 68440-75-5. It is also known as dimethylsiloxane/ phenyl silsesquioxane copolymers. NewsChem supplies dimethylsiloxane, carboxymethyl copolymer for laboratory research and bulk production; product code 666746. Send an inquiry for purity, packaging, price and lead time.