Quote:
Originally Posted by Tinker
You can also buy critic acid food additive from amazon for about 8$ for 2 pounds. 10 to one with water. A natural chelating agent.
Side note: Ospho is 15% phosphoric acid, also in coca-cola (check the label).
|
This is not true. I did a lot of research on citric acid a year or so ago because I was led to believe this same thing. I bought some and experimented with various strength solutions and never experienced much success. In the end, I bought some
litmus strips (remember them from chemistry class?), and the citric acid solution tested out with a pH of 1.5, which is highly acidic. When I tested some Evaporust with the same strips, it yielded a pH of 7 (neutral), the same as distilled water. In the end, I was very disappointed with citric acid as a rust removal agent.