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layer, protects copper and its alloys in aqueous media, various atmospheres, lubricants, and hydraulic fl uids. benzotriazole also forms insoluble precipitates with copper ions in solution (that is, it chelates these ion), thereby preventing the corrosion of aluminum and steel in other parts of a water
if about % (by wt) of -guanidino-aryloimidazole compounds (derivatives of benzotriazole) are added to the water or to the solutions. ( ) ( ) detergent compositions containing metal discoloration inhibitors, j. r. schaeffer, procter & gamble co., u.s. patents and (november , ). ( ) composition for inhibiting...
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