Synonyms : Ethanedioic acid
Molecular Formula: C2H2O4
Molecular weight: 90.04
Cas No: 144-62-7
HS Code: 2917111000
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Items
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Spec
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TOTAL ACIDITY
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99.6% min
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ASH
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0.1% max
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IRON
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0.02% max
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LOSS ON IGNITION
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0.08% max
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SULFATE
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0.1% max
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CHLORIDE
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20ppm max
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HEAVY METAL
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10ppm max
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Properties:
Oxalic acid forms fine colourless crystals, readily soluble in water, with light nitrogen oxides-like odour. Oxalic acid dihydrate begins to dissociate at temperature over 30 C. If heated quickly, it melts at 101.5 C,anhydrous oxalic acid melts at 180 C.
Applications:
1.Purifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline,Chloramphenicol,etc;
2.Precipitating agent in Rare-earth mineral processing;
3.Bleaching agent in the textile activities, wood pulp bleaching;
4.Rust-remover for Metal treatment;
5.Grinding agent, such as Marble polishing;
6.Waste water treatment, removing calcium form water
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