Oxalic acid is an organic acid with a chemical formula of H₂C₂O₄. It is mainly used in cleaning, rust removal, industrial processing, chemical analysis, plant growth regulation and other fields. Its strong acidity and good reducing properties make it play an important role in multiple scenarios. As an oxalic acid supplier, Aojin Chemical will share with you what are the uses of oxalic acid?
Cleaning and rust removal
1. Removing metal rust and scale
Oxalic acid can react with rust (iron oxide) to form soluble compounds, which are often used to clean rust stains on the surface of stone, tiles, and wood; it can also remove calcium scale in bathroom equipment or boilers.
Wood bleaching
In the processing of wood products, oxalic acid can neutralize the black spots caused by iron ion pollution in wood and restore the natural color of wood.
Industrial and chemical applications


1. Metal processing
Oxalic acid is used for anodizing of aluminum to enhance surface corrosion resistance; it can also be used as an extractant for rare earth metals.
2. Textile printing and dyeing
As a mordant or bleaching aid, it helps dyes adhere evenly to fibers and improves dyeing effects.
Synthetic chemicals
It is the raw material for preparing compounds such as oxalates and oxalates, and is widely used in the pharmaceutical, plastic and other industries.
III. Laboratory and scientific research
1. Analytical chemistry
Oxalic acid can be used as a reducing agent in titration experiments
2 Preparation of buffer solutions.
Mixed with other acids or salts, adjust the pH of the experimental system.
Precautions
1. Oxalic acid is irritating to the skin and mucous membranes. Wear gloves and goggles when in contact
Storage conditions 3.
It needs to be sealed and stored in a cool and dry place to avoid contact with strong oxidants.


Post time: May-26-2025