... of borax, chromium salts, manganese salts, phosphate, etc. need to use a lot of caustic sodaPackaging: Caustic soda flakes ----- 25kg pp bag ... be useful in etching, removing anodizing, or converting a polished surface to a satin-like finish, but without further passivation such ... replaced many solvent based systems in the early 1990s when trichloroethane was outlawed by the Montreal Protocol. Water and ...