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Oxalic acid exists in white transparent crystal combining two crystal water, Melting Point: 101°C-102°C, Specific Gravity:1.653, easily sublimate at 100°C, easily dissolve in alcohol and water.
Appearance White crystal
Transparency of solution,% ≤3 2
Insoluble in water,% ≤0.005
Residue on ignition(as SO4),% ≤0.02
Total nitrogen,% ≤0.002
Heavy metals (as Pb),% ≤0.0004
Oxalic Acid is widely used as complexing,masking,precipitating and reducing agent.It can be used in rare earth extraction,textile printing and dyeing,leather processing,catalyst preparation and metal surface cleaning,and also can be used as pharmaceutical intermedaites.