Oxalic Acid 99.6% Oxalic Crystal CAS No.: 144-62-7 Usage: ... Point101.5°C Boiling Point149-160°CSPECIFICATIONS Total Acidity, %≥99.6 Ash, %≤0.1 Iron (as Fe ) , %≤ ... ≤20 ppm Heavy metal , ≤10 ppmAPPLICATIONPurifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline , Chloramphenicol , ... water treatment, removing calcium form water Oxalic Acid 99.6%