Aluminum surface cleaning agent

Details Aluminum surface cleaning agent Aluminum surface cleaning agent

C - Chemistry, Metallurgy

23

G

149/16

C23G 1/12 (2006.01)

Patent

CA 1263589

ABSTRACT OF THE DISCLOSURE Chromium free cleaning compositions for cleaning aluminum and aluminum alloy surfaces comprising A. from 0.2 - 4 g/l ferric ion and B. sufficient sulfuric and/or nitric acid to pro- duce a pH of 2 or less. The invention also relates to compositions con- taining from 0.001 - 0.5 g/l of fluoride ions.

494107

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