DIYbanter - View Single Post - Super-strength rust/iron remover needed

boden

wrote:

In article cc49ba84-9861-4fd0-abbe-5268657fad59
@p25g2000hsf.googlegroups.com, says...

On Sep 14, 10:57=A0am, wrote:

snip

Oxiclean does not contain oxalic acid. =A0It is a percarbonate which
hydrolyzes when mixed with water to ultimately produce free oxygen.

You are right. OxiClean contains oxygen bleach

I bought some CLR, could not find anyone that sold any oxalic acid-
related products in our city, maybe it has been banned. Any ideas on
the HCl-based iron stain/rust/lime removers??

If all else fails, "Whink" has taken off every rust stain I've ever used
it on. But do read the label, it's basically thickened, dilute
hydrofluoric acid, and HF can do nasty things.

As I recall the rust stain was on a sink or tub. HF will dissolve
glass. I can recall in the 40s and 50s when HF was sold in waxed
cardboard because glass containers couldn't contain it. Then plastic
bottles (Nalgene)came along and the spills became less frequent.
Porcelain will be attacked.

Also, HF has the interesting property of penetrating the skin and then
burning out from deep within. Some of the most painful acid burns I've
had were from HF.