We supply asborbic acid. The specification of ascorbic acid is give under the table :

Appearance : White or almost White Crystal or Crystalline Powder
Identification : Positive
Melting Point : About 190 deg C
pH ( 5%, W/V) : 2.1-2.6
Specific Optical Rotation : 20.5 ° - 21.5°
Clarity and Colour Solution : Clear ≤ BY 7
Copper : ≤0.0003%
Heavy Metals : ≤0.001%
Iron : ≤0.0002%
Mercury : ≤0.0001%
Zinc : ≤0.00025%
Arsenic : ≤0.0003%
Lead : ≤0.0002%
Oxalic Acid : ≤0.2%
Loss on drying : ≤0.1%
Sulphated Ash : ≤0.1%
Assay : 99.0 %- 100.5%