|Place of Origin:||CHINA|
|Certification:||GMP, ISO, KOSHER, HALAL|
|Model Number:||COSMETIC GRADE|
|Minimum Order Quantity:||1kg|
|Packaging Details:||25kg/Carton and it can load 20MT in one 20'GP|
|Delivery Time:||Prompt shipment|
|Payment Terms:||L/C, D/A, D/P, T/T, Western Union, MoneyGram|
|Supply Ability:||10000 MT per year|
|Other Name:||L-Ascorbic Acid||Type:||Vitamins|
|Heavy Metal:||10ppm Max||Melting Point:||190-194 °C|
|CAS No.:||50-81-7||Shelf Life:||3 Years|
Skin Whiting Material Vitamin C White Crystalline Powder for Cosmetics CAS 50-81-7
Introduction of Vitamin C
Vitamin C, also called L-Ascorbic Acid, is a soluble vitamin. It is an ingredient for anti-aging and maintenance. Vitamin C can reduce melanin and play the whitening effect. It also can stimulate the synthesis of collagen and play the wrinkle removing and tightening effect. Besides, Vitamin C can antioxidate, fight free radicals and prevent from irritation of external environment. It can intensify defense capability and avoid skin damage by ultraviolet ray. So Vitamin C is suitable for skin care both in day and night.
|TEST ITEMS||SPECIFICATIONS||TEST VALUE|
|Appearance||White or almost white, crystalline powder or colourless crystals||A white crystalline powder|
|Melting point||About 190℃, with decomposition||191℃|
|Infrared Absorption Spectrum||Infrared absorption spectrum accord with the reference spectrum of ascorbic acid CRS||Meets the requirements|
|pH (with 5% water solution)||2.1 ~ 2.6||2.3|
|pH (with 2% water solution)||2.4 ~ 2.8||2.5|
|Appearance of solution||Clarity : clear; Colour: ≤BY7||Clarity: clear; Colour: <BY7|
|Specific optical rotation||+20.5 ̊ ~ +21.5 ̊||+21.0 ̊|
|Loss on drying||≤0.4%||0.04%|
Impurity C: ≤0.15%
Impurity D: ≤0.15%
Unspecified impurities: ≤0.10%
Total impurities: ≤0.2%
Impurity C: undetectable
Impurity D: 0.02%
Unspecified impurities: 0.01%
Total impurites: 0.03%
|Residual solvents||Meets the requirement||Meets the requirements|
In cosmetics, Vitamin C and copper ion interfere the production of melanin by interaction at the activity area of tyrosinase, which has a very good effect of whitening, removing freckle and diminish inflamation. L-Ascorbic Acid is a hydrophilic and unstable molecule. Its penetrability to the skin is not good because of hydrophobicity of cuticle. Besides, L-Ascorbic Acid is a kind of electrically charged molecule. Its unstability further constrains the penetrability to the skin. An effective way is to add ferulic acid which can make the transformation of Vitamin C from electrically charged to no charged and meanwhile reduce the acidity of L-Ascorbic Acid to less than 3.5. Thus L-Ascorbic Acid can keep stable and penetrate the cuticle.
1. The person who is easily tired.
2. The person worked in polluted environment. Someone with high Vitamin C in the body almost does not absorb the hazardous substances like lead, cadmium, chromium etc..
3. The person who is love of smoking. To eat more foods with Vitamin C can improve the resistance of cells, keep the elasticity of blood vessel and eliminate the nicotine in the body.
Packaging and storage
25kg/carton or drum or according to the requests of the customers in bulk.
For storage, it should be stored in a cool and dry place at room temperature and avoid the direct sunlight.
1. Can we get free samples?
We can provide free sample within 200g which is enough for test generally and the customers undertake the FedEx freight.
2. What is the warranty of the quality?
Contact Person: terry