Oxalic Acid (H₂C₂O₄)
Ethanedioic Acid
What is Oxalic Acid?
Oxalic Acid, with the chemical formula H₂C₂O₄, is an organic acid with a white crystalline structure. It occurs naturally in many plants (such as spinach and rhubarb) and is also produced synthetically in industry.
Although it is a weak acid, it can be corrosive and toxic at high concentrations. Therefore, it requires careful storage and safety precautions in industrial use.
Oxalic Acid Properties
| Feature | Value |
|---|---|
| Physical Appearance | White crystals |
| Chemical Formula | H₂C₂O₄ |
| Molecular Weight | 90.03 g/mol (anhydrous) |
| Packaging Type: | Bag |
| Other Names | Oxalic Acid, Ethandioic Acid |
In Which Industries Is Oxalic Acid Used?
-
Cleaning and Maintenance: In rust and scale remover formulas; for cleaning and protecting metal surfaces.
-
Pharmaceutical Industry: In certain pharmaceutical products and kidney stone prevention formulations.
-
Paint and Textiles: In the leather processing, textile dyeing, and coating industries.
-
Food Industry: Limited use in cheese ripening and certain food additives.
-
Agriculture: For controlling plant diseases and as a parasite preventative in beekeeping.
-
How is Oxalic Acid Produced?
Oxalic acid is produced in industry using two main methods:
-
Oxidation of Glycolic Acid:
-
Oxalic acid is obtained by oxidizing with glycolic acid, nitric acid, or sulfur-based oxidizing agents.
-
It is a highly efficient and widely used method.
-
-
Methanol and Carbon Monoxide Reaction:
-
Methanol and carbon monoxide react under high pressure and temperature in the presence of a catalyst (usually iron).
-
Ultimately, oxalic acid and its derivatives are obtained.
-
Both production methods require high security and controlled processes.