CAS no.50-81-7 99% Vitamin C / Ascorbic Acid powder

Basic Info

Model No.: LYN- 50-81-7

Shelf Life: 2 Years

Form:: Powder

CAS: 50-81-7

Name:: Vitamin C

CoA: Available

Sample: Free

Additional Info

Packaging:  25kg/Drum

Productivity: 10000kg

Brand: zhishang

Transportation: Ocean,Land,Air

Place of Origin: Shandong, China (Mainland)

Supply Ability: in stock

Certificate: ISO CE

HS Code: 50-81-7

Port: Shanghai,Tianjin,Qingdao

Product Description

CAS no.50-81-7 99% Vitamin C / Ascorbic Acid powder 


   A white crystalline powder. Ascorbic acid is the enolic form of 3-oxo-L-    

   gulofuranolac-tone. It can be prepared by synthesis from glucose, or extracted from plant

   sources such as rose hips, blackcurrants or citrus fruits. It is easily oxidized in air. It is
   essential for the formation of collagen and intercellular material, bone and teeth and for
   healing of wounds. It helps maintain elasticity of the skin, aids the absorption of iron and
   improve resistance to infection. The lack of VC will cause scurvy.   


1) It can be used in food additive. It is a good and safe nutritional agent as well
as an antiseptic and baking agent of flour processing
2) It can be used in feed additive and can improve animals’ immunity from 
3) VC fine-crystal and fine powder with 40-80, 30 – 300 mesh (US standard sieve)

4)It can be used in producing various medicines, it is an important medicine for 
clinical supplementary treatment


1. Food grade: As antioxidant and food nutrition enhancer, Vitamin C is used in flour product, beer, candy, jam, can, drink, dairy products 

2. Medicine grade: Vitamin medicines, prevent scurvy, and a various of drugs for acute or chronic infectious diseases, purpura, dental caries, gingival abscess, anemia  

3. Cosmetic material: Vitamin C can promote collagen formation, its antioxidation, can restrain pigment spots 


 COA :


Appearance White or  almost  white crystal  or  crystalline powder                   
Identification   Positive
Melting point  191 °C  ~  192°C 
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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