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oxalic acid dihydrate

Product name oxalic acid dihydrate
GOST no data
CAS 6153-56-6

Oxalic acid dihydrate is a colorless, odorless crystalline solid with a monoclinic lattice. It is boundedly soluble in water (9.5g/100ml at 15°C), solubility rises with the temperature. It is also partly soluble in diethyl ether, ethanol. Almost insoluble in chloroform, petroleum ether, benzene. Oxalic acid is a simplest dicarboxylic acid, t is a relatively strong organic acid, being about 10,000 times stronger than acetic acid. Its salts and esters are called oxalates.


NaOH + CO --> HCOONa

  • by oxidation of carbohydrates, alcohols, glycols with the mixture of nitric and sulfuric acid in the presence of V2O5.
  • by oxidation of ethylene or acetylene with nitric acid in the presence of PdCl2 or Pd(NO3)2;


    Oxalic acid is used:

  • as a mordant in textile and tanning industry;
  • for bleaching, and rust removal in industry and household;
  • as reducing agents for photography;
  • as an insecticide against the parasitic Varroa mite;
  • as an purifying agent in pharmaceutical industry;
  • as a precipitating agent in rare-earth metal processing;
  • for waste water treatment;
  • for removing scale from automobile radiators;

  • Manufacturer(s) no data
    Chemical structure of oxalic acid dihydrate

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