Uses of Oxalic Acid

Oxalic acid, also known as ethanedioic acid, can be produced chemically in metal salts such as calcium and is also found in certain foods such as rhubarb, spinach and parsley.

Metabolic Byproduct

When a food that is rich in oxalic acid is ingested, oxalic acid can bind to calcium in the body and cause kidney stones. Oxalic acid is indigestible and is excreted after moving through the digestion system to the urinary tract.

Purifier

Oxalic acid is used in the pharmaceutical as a purifying agent. Oxalic acid is also used in waste water treatment to remove calcium.

Photography

Photographers use oxalic acid as a reducing agent in photographs produced by the monochrome printing process.

Wood Restoration

Oxalic acid is used to brighten and bleach wood patios and furniture before applying a sealant or wood stain.

Cleaner

Oxalic acid is used in commercial cleaning solutions, and removes rust and hard water stains on metal, plumbing, counter tops and ceramic tile.

References

• Oxalic Acid
• Oxalic Acid and Juicing
• Uses and Precautions of Oxalic Acid