Appearance: White powder or granular
D-glucuronic acid: 44% min;
Molecular weight: 100, 000Da max;
Transparecy: 99% min;
PH(0.1%solution): 5.5-7.5
Protein: 0.1% max;
Heavy metal: 20ppm max;
Arsenic(As): 2ppm max
Loss on drying: 10% max;
Residue on ignition: 15% max,
Total bacteria amount: 100CFU/g max;
Mold & yeast: 100CFU/g max,
Escherichia coil: Absent,
Salmonella: Absent,
Staphylococcus aureus: Absent