I watched the following video
and it showed making and using a rust removing solution which seemed to work. I usually use some sort of acid, for example, muriatic, which seems to work pretty well, but acids do remove metal. I have also tried electrolysis, which also works well. But, his formula seems to be not quite an acid. It is hard to figure out exactly what is in the formula. The ingredients are three white powders: carbonato, lemon salt, and ammonia. I think that it is clear that the first two are sodium carbonate and citric acid. That causes the bubbling. But, the powdered ammonia is strange. I searched up ammonia powder, and it is ammonium carbonate. I have not heard of this in any rust remover solution. What part might it play? Would it be reasonable to substitute liquid ammonia? A web search says that ammonia will remove rust, but I don't know the chemistry. Does anyone have any insight on the chemistry involved?
and it showed making and using a rust removing solution which seemed to work. I usually use some sort of acid, for example, muriatic, which seems to work pretty well, but acids do remove metal. I have also tried electrolysis, which also works well. But, his formula seems to be not quite an acid. It is hard to figure out exactly what is in the formula. The ingredients are three white powders: carbonato, lemon salt, and ammonia. I think that it is clear that the first two are sodium carbonate and citric acid. That causes the bubbling. But, the powdered ammonia is strange. I searched up ammonia powder, and it is ammonium carbonate. I have not heard of this in any rust remover solution. What part might it play? Would it be reasonable to substitute liquid ammonia? A web search says that ammonia will remove rust, but I don't know the chemistry. Does anyone have any insight on the chemistry involved?