... polyvinyl acetal resin,methyl methacrylate,catalyst in polyesters, epoxy resin,exchange resin,etc;cross linking agent in silicon and fluoro robber; Oxidizer ... used to bleach oil,flour,fiber,etc.Be used in non-prescription ... for treatment of acne, an antiseptic and local anaesthetic in treatment of burns and ulcers as a keratolytic;be used ...