Traditionally, most of the copper products in the finished product after processing, using chromate or (BTA) passivation, but can not achieve the desired color effect of the antioxidant defense. In particular, copper alloys (such as bronze, brass), the existence of the metal component itself electronegativity difference, in wet conditions prone to discoloration, relying on a simple chromate or (BTA) is difficult to meet the requirements, and chromic acid salt products are heavily polluted. 

 This product contains an ingredient of organic molecules, the surface of the copper and alloy covalently to form a dense layer of organic protective film, cut off from contact with the outside world of copper, in order to achieve effective protection of the copper surface. Easy to use, non-toxic, non-waste emissions. 

 ● Features 

 1, a strong antioxidant ability to prevent discoloration, and high temperature anti color (260 degrees). 

 2, PH value is moderate, not to hurt the workpiece. 

 3, to maintain the original luster of copper surface, welding and electrical conductivity. 

 4, on the copper surface with good wetting, to form a uniform protective film. 

 5, the use of safe, do not burn. 

 ● Specifications 

 Appearance: light yellow transparent liquid 

 Weight: 1.02 ± 0.01 

 PH value: 7 ± 0.5 

 ● Application 

 Copper and its alloys for oxidation discoloration 

 ● Use 

 Dilution: 10 ~ 20% 

 Temperature: room temperature ~ 60 ℃ 

 Time: 3 ~ 5min 

 Use: Soak or spray 

 Note: The concentration can be dubbed the work of 5 to 10% concentration or testing to determine, additional use may be appropriate to maintain a working stock solution concentration.