Cleaner for Silver

Traditionally, anionic surfactants have offered better detergency then nonionics, but were not compatible in acid systems. This formulation uses Avanel S-70, an anionic molecule which performs even at very low pH s and aids in the removal of surface oils and deposits. Unlike nonionics, Avanel S-70 will dissolve readily into the formulation without forming gel particles thus eliminating the need for excessive agitation. This formulation can be used for over-the-road aluminum trailers, wire wheels on automobiles or in the preparation of aluminum for anodizing and cleaning. 

Deionized Water Phosphoric Acid (85%) Citric Acid (50%) Nitric Acid (70%) Avanel S-70 

Charge the water to a mixing vessel. Under slow agitation and with due care, add the acids to the water. Add the Avanel S-70 and mix 10 minutes. NOTE If additional brightening is required, the nitric acid concentration may be increased to 1.5%. Formulation CM-101 

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