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　　Formula for Die-Cast Aluminum Whitening Agent

　　Die-cast aluminum parts may sometimes become discolored or oxidized, requiring the use of a whitening agent to restore their original appearance. A die-cast aluminum whitening agent typically contains a combination of chemicals that work together to remove stains and oxidation from the surface of the aluminum.

　　One common ingredient in die-cast aluminum whitening agents is phosphoric acid. Phosphoric acid is a strong acid that can dissolve oxides and other contaminants on the surface of the aluminum. It also forms a protective phosphate layer on the metal, which helps to prevent further oxidation.

　　Another important component is a surfactant. Surfactants help to wet the surface of the aluminum and improve the penetration of the whitening agent. They also help to remove dirt and grease from the surface, enhancing the effectiveness of the whitening process.

　　Some whitening agents may also contain additives such as corrosion inhibitors and brighteners. Corrosion inhibitors help to protect the aluminum from further corrosion during the whitening process, while brighteners can enhance the shine and luster of the treated surface.

　　The specific formula for a die-cast aluminum whitening agent will depend on the severity of the staining and oxidation, as well as the type of aluminum alloy being treated. Different formulations may be required for different applications, and it is important to follow the manufacturer's instructions carefully to ensure safe and effective use.

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