1, industrial oxalic acid as bleaching agent: used to produce antibiotics and other drugs, as well as solvents, dye reducers, tanning agents, etc. Refining rare metals.

2. Industrial oxalic acid as reducing agent: mainly used in organic synthesis industry to produce hydroquinone, pentaerythritol, cobalt oxalate, nickel oxalate, gallic acid and other chemical products.

3. Industrial oxalic acid as mordant: ammonium ferric oxalate is a reagent for printing blueprints.

4. Industrial oxalic acid can remove rust: oxalic acid can be used to remove rust. After the skin comes into contact with oxalic acid, it should be washed with water in time.