Oxalic Acid

The content of 99.6% above, sulfate 500 PPM, the heavy metal content below 5 PPM, more than refined oxalic acid quality standards. Properties: colorless transparent crystal or powder. The crystal structure have two kinds of forms, namely the α and β type (diamond) type (single inclined crystal shape). No smell, taste is sour.



Melting point: α type189.5 ℃ β type: 182 ℃



Boiling point: the boiling point 150 ℃ (sublimation).



The relative density: 1.653 (2 water content), 1.9 (no water content). αtype: 1.900, βtype: 1.895



Refractive index: 1.540



Stability: 189.5 ℃ decomposition



Dissolve situation: easy soluble in alcohol. Soluble in water. Slightly soluble in ether. Insoluble in benzene and chloroform. Water-soluble 100 ml dissolve 4900 g (25 ° C), the highest concentration of 98%.



Other properties: in 100 ℃), 125 ℃ began to sublimate quickly lifted, 157 ℃ of sublimation, and began when decomposition. But with alkali reaction, can occur esterification, acyl halogenating, amidation reaction. Can also occur reduction reactions, heated decarboxylation reaction happened. No water oxalic acid. It has hygroscopic property Oxalic acid can and many metal form soluble in water complex.



use



Oxalic acid mainly used for reducing agent, and



Used in the production of antibiotics and borneol ect drugs and refining rare metal solvent, dye reductant, tanning agent.



Oxalic acid can also be used in cobalt-molybdenum-aluminum production, metal catalysts and marble cleaning and textile bleaching.



Used in metal surface cleaning and processing, rare earth elements extraction, the textile printing, the leather processing, catalyst preparation, etc.



In organic synthesis industry mainly for the production of hydroquinone, pentaerythritol, oxalic acid, oxalic acid cobalt, nickel, gallic acid, and other chemical products.



Plastic industry used in the production of PVC, amino plastics, uf plastic, QiPian, etc.



Dyestuff industry used to make salt and PinLu, etc.



Printing and dyeing industry can replace acid, and used as a pigment dye show color help dye, the bleaching.



In addition, oxalic acid can also be used in the synthesis of various oxalic acid ester, oxalic acid, salt and grass amide etc products, and two in oxalic acid ethyl ester and sodium oxalate, calcium oxalate, production is the largest.



Oxalic acid can be used to rust. And the generation of oxalic acid salt solubility big acid.



Oxalic acid, oxalic acid mordant antimony can be printed blueprint of ammonium iron is the potion.