摘要:
A metal oxide composition containing a water soluble polymer, erythorbic acid, a surfactant, a buffer, ascorbic acid (optional), and citric acid (optional). The novel composition may be used according to at least two novel methods. The composition may be sprinkled as a powder onto a wetted, oxidized surface, and then rinsed off, or it may be dissolved in water and the metal surface exposed to the resulting solution.
摘要:
A composition for removing metal oxides from stainless steel is disclosed. The composition is an aqueous solution of nitric acid, sulfamic acid and a chelating agent selected from a group comprising amino acids and hydroxy acids. The solution should be applied at an elevated temperature.