| 摘要 |
PURPOSE:To well remove oxide scale from copper without corroding the copper itself by using an aqueous soln. contg. 2-aminoethylmercaptan as an effective component. CONSTITUTION:2-Aminoethylmercaptan or a salt thereof is used as a rust remover for copper or a copper alloy in the form of an aqueous soln. The preferred salt is hydrochloride, sulfate, nitrate, acetate or p-toluenesulfonate, the concn. of the aqueous soln. is regulated to >=about 0.5wt%, and additives and auxiliaries may be properly added. The rust remover is odorless and is handled with high work efficiency. |
