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.