Applications of Oxalic Acid
Oxalic acid is widely used in various industrial sectors:
Pharmaceutical industry: Used in the manufacture of medicines such as chlortetracycline, oxytetracycline, tetracycline, streptomycin, vitamin B12, phenobarbital, calcium pantothenate, borneol, and sodium iodoxamate. The oxalic acid derivative dihydroxyacetic acid is used in the production of fragrances and medicines.
Metallurgical industry: Used for the separation and extraction of rare earth elements and other metal elements, as well as the production of metal powders.
Synthetic resin industry: Used as a curing agent for cold-setting phenolic resins, an acidic catalyst component for the production of phenolic varnishes, and a condensate component in the preparation of hydrophobic porous polyamide membranes.
Light industry: Used for tanning, polishing, rust removal, bleaching, and descaling of wood, aluminum products, and marble, metal cleaning and protective film formation, as well as in the production of inks, pigments, and coatings.
Textile industry: Used as a mordant for cotton and wool, a scouring agent for special pattern dyeing of wool, a catalyst for crosslinking finishing agents to fabrics in the flame retardant finishing of cotton fabrics, and for the flame retardant treatment of textiles.
Chemical industry: Used as an antiknock agent for unleaded gasoline, for methylene blue decolorization, catalyst preparation, concrete corrosion resistance, and foam board reinforcement. It is also an active component in clothing insecticides and scale removers.
Oil and fat chemistry: Used for the refining of turpentine, glycerin, and hard fat. In addition, oxalic acid is also used in the skin film processing of aluminum alloys, the manufacture of hard alloys, alloy tool heads, and as a reagent for iron and steel and soil analysis.
Other industries: Used in photography and printing processes, degumming of sunflower and rapeseed oil, improving the combustion efficiency of milk fuel and oxidation of maltose, etc.

Shandong Pulisi Chemical Co., Ltd. specializes in producing and exporting high-purity oxalic acid with stable batch consistency and customized packaging solutions for global industrial clients. Our oxalic acid undergoes strict quality control at every production stage, ensuring low impurity content and reliable performance in metal surface treatment, textile processing, rare earth separation, and environmental cleaning applications. With mature logistics channels and long-term cooperative production bases, we provide stable bulk supply, flexible order arrangements, and comprehensive technical support to help customers reduce costs and improve efficiency in their production chains.