Item: 1503 Name: oxalic acid Descriptions: Items Spec TOTAL ACIDITY 99 ... max CHLORIDE 20ppm max HEAVY METAL 10ppm max 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 ... heated quickly, it melts at 101.5 0C,anhydrous oxalic acid melts at 180 0C. Density at 18 ...