Oxalic acid for cleaning

[cob]

I have been using Oxalic acid off and on for years for a variety of things related to cleaning.

yesterday, was my most recent purchase of oxalic acid and it made me realize that

oxalic acid is 1/10th the cost of citric acid and cleans copper and stainless just as

well as citric acid. there are many sources and concentrations. I bought 9oz. (250g.)

at the dollar store 10% concentration powder in the form of Barkeepers friend.

The last time I bought citric acid it was $6 for 5oz.

So far I have NOT been able to find any evidence that oxalic acid can be used to invert sugar.

[Saltbush Bill]

Citric is very cheap to if you can find it by the kilo or pound.
Its used quite a bit in the food industry.
$5.20 au Per KG if I buy 5 kg at a time.

[Sulaiman]

Consider the cumulative toxicity of oxalic acid before proceeding...
... can cause kidney stones..

[Demy]

I guess it also depends on where we live. I usually use citric acid, I use a type made for cleaning at a cost (Italy) of about € 4.5-5 per kg, instead to acidify I bought a type of food grade at about € 7.5 per kg (on line). I have never used oxalic acid.

[SpeakEasy]

Forgive my ignorance, but how would you mix the Oxalic acid into a cleaning solution?
I'm a beekeeper so I have a bunch that I use to treat the bees for Varroa Mites and we vaporize it.

[Expat]

Forgive my ignorance, but how would you mix the Oxalic acid into a cleaning solution?
I'm a beekeeper so I have a bunch that I use to treat the bees for Varroa Mites and we vaporize it.

Oxalic acid is plenty soluble in water something like 90 g/L at room temp (20c).

1 to 6, acid to water, is what I'd use for bleaching stains out of wood, probably something milder for sanitation purposes.

Use appropriate personal protection gear!

[cob]

Consider the cumulative toxicity of oxalic acid before proceeding...
... can cause kidney stones..

wise words, I should have noted that oxalic acid can absorb through skin.

so as Expat notes above. "Use appropriate personal protection gear!"