It's called a descaler and it's sold by a chemist supplier. What do you mean phosphoric acid or vinegar? The ingredients are but-2-yne-1,4-diol
hydrogen chloride and formeldehyde not butyric acid , it's supposed to remove salt deposits from metals.
http://www.kalochem.gr/datafiles//807sd_-_DESCALER_KL828_(GB)(2).pdf
[Edited on 23-3-2016 by gatosgr] |