Hi all I have bought a boat with rust stains on the sails all along the wire and generally very dirty. I heard you can soak them in Oxalic acid. So I was thinking that I could put 15 litres of water into a 45 gallon drum add 3.4kg of the acid and soak sails for 30 minutes. Is this a good idea or not and will it affect the brass fittings? Thanks
Removing stains and spots on Dacron sails: Rust: Soak the area in a 5% solution of oxalic acid dissolved in hot water. Follow this with a 2% solution of hydrochloric acid in warm water and, finally, and then rinse the spot well with clear water.
The active ingredient in Barkeepers Friend is Oxalic Acid.
Gord May "If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
[B]Removing stains...Follow this with a 2% solution of hydrochloric acid
I'd skip, or at least test first, the hydrochloric acid (muriatic acid) on the wire, brass or bronze fittings. It can be a bit violent with those. The resulting chloride compounds are not pretty. This is not an issue with oxalic acid.