Complexing agents, sequestering agents, precipitating agents, reducing agents. Analysis for the test and the measurement of beryllium, calcium, chromium, gold, manganese, strontium, thorium and other metal ions. Microscopic analysis of test microcrystalline sodium and other elements. Precipitation of calcium, magnesium, thorium and rare earth elements. Calibration standard solution of potassium permanganate and cerium sulfate solution. Bleach. Help agent. Also be used to remove rust in the construction industry on the clothes before brushing the wall paint, because the walls should be painted a strong alkaline oxalate addition of alkali.
Pharmaceutical industry for the manufacture of chlortetracycline, oxytetracycline, tetracycline, streptomycin, borneol, vitamin B12, phenobarbital and other drugs. Printing and dyeing industry as chromogenic help agent, bleach, pharmaceutical intermediates. Plastics industry for the production of polyvinyl chloride, amino plastics, urea-formaldehyde plastics. [2]
The catalyst used for the synthesis of phenolic resin, mild catalytic reaction, the process is relatively stable, the longest duration. Oxalic acid in acetone solution which catalyze the curing reaction of the epoxy resin, to reduce the curing time. Also used as a urea-formaldehyde resin, melamine formaldehyde resin pH adjusting agent. Also added a water-soluble polyvinyl formal adhesives in improving drying speed and bonding strength. Urea-formaldehyde resins are also used as a curing agent, a metal ion chelator. Starch can be used as an oxidizing agent KMnO4 adhesive accelerator to accelerate the rate of oxidation and shorten the reaction time.
As a bleaching agent
Oxalic acid is mainly used as a reducing agent and bleach for the production of drugs such as antibiotics and borneol and refining rare metals solvents, dye reducing agent, tanning agent.
Oxalic acid is also used cobalt – molybdenum – washing and bleaching of textiles production of aluminum catalyst, metal and marble.
For metal surface cleaning and treatment, extraction of rare earth elements, textile, leather processing, preparation of catalysts.
As a reductant
In organic synthesis industry is mainly used in the production of hydroquinone, pentaerythritol, cobalt oxalate, nickel oxalate, gallic acid and other chemical products.
Plastics industry for the production of polyvinyl chloride, amino plastics, urea-formaldehyde plastics, paint and other films.
Industrial base for the manufacture of dyes, such as light green.
Dyeing industry can replace acetic acid, used as a pigment dye color help agent, bleach.
Pharmaceutical industry for the manufacture of chlortetracycline, oxytetracycline, tetracycline, streptomycin, ephedrine.
In addition, oxalic acid can be used for the synthesis of various oxalate, oxalate and oxamide and other products, and to diethyl oxalate and sodium oxalate, calcium oxalate, such as the largest output.
As mordant
Oxalic acid can be used for antimony mordant, ferric ammonium oxalate is printed blueprint Pharmacy.
Descaling function
Oxalic acid is used to rust. However, be careful when using oxalic acid has a strong corrosive stainless steel. High concentration of oxalic acid is also susceptible to corrosion hand. And the resulting large solubility of the acid oxalate, but has some toxicity. When using, do not eat or drink on the line. After contact with skin oxalic acid, should be promptly cleaned with water.
Method
Chemical agents to sell the store to buy a bottle of acid, take some paired with warm water solution, wipe the paint on rust stains. Then rub with metallographic sandpaper, and finally spray paint. General store selling oxalic acid also sell some medical equipment, glassware.