Ascorbic Acid

Ascorbic Acid  (vitamin C)is a white or slightly yellow crystals or powder,a little acid.m.p.190℃-192℃,easily soluble in water,a little soluble in alcohol and uneasily soluble in Ether and chlorofom and other organic solvent. In solid state it is stable in air.Its water solution is easliy mutated when it meets with air.

Specific applications in food

1  Prevent oxidative browning

Oxidative browning often occurs in process and storage of fruit and vegetable, which we do not want happen from the view of economic point. Therefore, Ascorbic Acid is widely used to prevent oxidative browning of the fruit and vegetable products as an effective phenolic inhibitors.

2  Change the flavor of food

The special flavor of food often bastardizes in the process. For example, the change of the special flavor will be prevented with added in 0.005% -0.02% of Ascorbic Acid in the storage of juice. Ascorbic Acid also can improve the special flavor of beer and wine.

3  Prevent the corrosion of tank skin

As a water-soluble antioxidant, Ascorbic Acid can prevent corrosion from tin plated steel sheet of the container inner wall.

4  Prevent lipid oxidation

Ascorbic Acid has a strong reduction and it can be used as antioxidant synergist to prevent rancidity of fats in greasy food.

Sidley chem is one of the most famous Ascorbic Acid suppliers in China. If you buy  Ascorbic Acid or inquiry  Ascorbic Acid price,  please e-mail us through:  to contact us.


Ascorbic Acid
E No: E300
Einecs No: 200-066-2
CAS No. 50-81-7
HS Code: 29362700
Appearance White or  almost  white crystal  or  crystalline powder
Identification Positive
Melting point 191 ℃  ~  192℃
pH (5%,  w/v) 2.2 ~   2.5
pH (2%,w/v) 2.4 ~   2.8
Specific optical  rotation +20.5°  ~  +21.5°
Clarity  of  solution Clear
Heavy metals ≤0.0003%
Assay (as C 6H 8O6, %) 99.0  ~  100.5
Copper ≤3 mg/kg
Iron ≤2 mg/kg
Mercury ≤1 mg/kg
Arsenic ≤2 mg/kg
Lead ≤2 mg/kg
Oxalic acid ≤0.2%
Loss   on drying ≤0.1%
Sulphated ash ≤ 0.1%
Residual solvents (as methanol) ≤ 500  mg/kg
Total  plate count (cfu/g) ≤ 1000
Yeasts  & molds (cfu/g) ≤ 100
Escherichia.  Coli/g Absence
Salmonella/  25g Absence
Staphylococcus aureus/ 25g Absence


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