Vitamin C Ascorbic Acid



[Product Name]: Ascorbic Acid 99% (Vitamin C)

[Chemical Formula]: C6H8O6

[CAS]: 50-81-7

[Product Performance]:

Vitamin C is a colorless crystal that is soluble in water and ethanol; it has an acidic taste although it is odorless. It is unstable in solution, but it remains stable in dry conditions. Vitamin C is involved in many processes in the human body related to metabolism, and it also helps to decrease the brittleness of blood capillaries.

 [Certificate of Analysis]:

Testing Item Standard Result
Assay 99.0%~100.5% 99.72%
Appearance White or almost White

Crystals Crystalline Powder

Solubity Easily Soluble in Water Conforms
Identification Positive Reaction Positive
Melting Point About 190℃ 190.6℃
Copper (Cu, mg/kg) ≤5 <5
Heavy Metals (Pb, mg/kg) ≤10 <10
Mercury (Hg, mg/kg) ≤0.1 <0.1
Lead (Pb, mg/kg) ≤2 <2
Arsenic (As, mg/kg) ≤3 <3
Oxalic Acid/% ≤0.2 <0.2
Ferrum (Fe, mg/kg) ≤2 <2
Cadmium (Cd, mg/kg) <1 <1
Impurity E/% ≤0.2 <0.2
Loss on Drying/% ≤0.4 <0.4
Sulphate Ash(residue on ignition)/% ≤0.1 <0.1
Specific Optical Rotation +20.5℃~+21.5℃ 21.08℃

[Storage]: Store in a climate controlled, insulated, dry, and ventilated location. Avoid moisture at all times. Please handle carefully to prevent container damage and be sure to stockpile in a location that does not contain toxic substances

[Packing]: Net weight 25kg per carton

[Loading]: 20mt/20FCL’; 18mt/20FCL’ with pallets

[Shelf Life]: Three years (when properly stored)


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