| Appearance | White Crystalline powder |
| Assay | 98%min |
| Melting point | 158℃~163℃ |
| Clarity of Water Solution |
Transparency,Colorless,non suspended matters |
| Specific Optical Rotation |
+186°~+188° |
| Free Ascorbic Acid |
0.1%max. |
| Free Glucose | 0.1%max. |
| Heavy metal | 10 ppm max. |
| Arenic | 2 ppm max. |
| Loss on Drying | 1.0%max. |
| Residue on Ignition | 0.5%max. |
| Bacteria | 300 cfu/g max. |
| Fungus | 100 cfu/g |