25-08-2021, 09:43 PM
I've not seen a mention of oxalic acid so far, but it's certainly good at shifting rust stains out of fabric. It does mobilise iron oxide by forming a soluble complex with the ferric iron.
It is rather poisonous, it's what makes rhubarb leaves thus, for instance, but with sensible precautions I've never had any issues using it.
I haven't tried it on really rusty steel, that's coming up sometime! I do have a container of phosphoric acid, and reading this thread it looks like I'll be getting some citric acid too, so lots of options available...
It is rather poisonous, it's what makes rhubarb leaves thus, for instance, but with sensible precautions I've never had any issues using it.
I haven't tried it on really rusty steel, that's coming up sometime! I do have a container of phosphoric acid, and reading this thread it looks like I'll be getting some citric acid too, so lots of options available...
