Originally Posted by
bark_eater
That's Phosphoric acid.
labeled as "Concrete & Metal Prep" :
https://www.lowes.com/pd/Klean-Strip...GAL/1001456348
- the flavor of acid is not on the label. I saw many variations of deck cleaner sold in very large quantities, which also did not state what kind of acid (going by memory)
- I believe I picked up the Klean Strip since it is labeled "metal prep", and came in a smaller quantity, and basically shelved in the same location.
you are correct, the MSDS states 10 ~ 30% Phosphoric acid:
https://www.google.com/url?sa=t&rct=...7&opi=89978449 (directs to PDF, i think)
hmmmm..... - I guess I didn't really need to dilute it!!
https://www.practicalmachinist.com/f...emoval.210082/
Any thoughts from the pros on Oxalic vs. Phosphoric treatment? Does Oxalic REMOVE rust, where Phosphoric converts rust to iron phosphate (a black coating)?