Appearance  white crystal or Crystalline powder

Purity, %                   99.5 Min

Loss on drying, %          0.3 Max

Residue on ignition, %       0.01 Max

Heavy metal (Pb), ug/g      10 Max

Fe, ug/g    ,               5 Max

Cu, ug/g                   1 Max

Mn, ug/g                   1 Max

As, ug/g                    4 Max

Sulfate, ug/g                50 Max

Chloride, ug/g              10 Max

Melting point, °C            165~168

Color, APHA                 5 Max

Clarity 5%watersolution)     Cloudless

Clarity(20%DMSO)          Cloudless

Refined Itaconic Acid