Qualified Vitamin C colourless Cystalline Powder with ISO
Ascorbic Acid is well-known for its antioxygenation. Most people
are familiar with L-Ascorbic Acid also called Vitamin C. When it is
not vitamin format, ascorbic acid was often used for film
production. Ascorbic acid is easy to be oxydated, but it can
prevent different cells from damaging. So it is called antioxidant.
It must be stored in cold and dark place. Because it can oxidate
the touched metals, it can not be stored in metal vessels.
Characters and Performances:
Vitamin C is white and slightly yellow crystalline powder with no
odour. It is easily dissolved in water and the solubility at 20℃ is
33g/100g. It can not be dissovled in vegetable oil, slightly
dissoved in ethanol (solubility is only 2g/100g). The color of
Vitamin C will get darker when being light and it is stable in the
dry conditions. Heat and light can destroy easily the solution of
Vitamin C, especially in the alkaline condition and in the presence
of metal. So it should pay more attention to avoid metals and air
touch in water and containers.
|Appearance||White or almost white, crystalline powder or colourless crystals|
|Melting point||About 190℃, with decomposition|
|Infrared Absorption Spectrum||Infrared absorption spectrum accord with the reference spectrum of
ascorbic acid CRS|
|pH (with 5% water solution)||2.1 ~ 2.6|
|pH (with 2% water solution)||2.4 ~ 2.8|
|Appearance of solution||Clarity : clear; Colour: ≤BY7|
|Specific optical rotation||+20.5 ̊ ~ +21.5 ̊|
|Loss on drying||≤0.4%|
Impurity C: ≤0.15%
Impurity D: ≤0.15%
Unspecified impurities: ≤0.10%
Total impurities: ≤0.2%
|Residual solvents||Meets the requirement|
As a kind of Vitamin C, ascorbic acid plays a great role in
preventing scurvy caused by long voyage travel. For example, in
order to prevent scurvy, oranges with rich of vitamin C was
provided for sailor and passengers. Although most animals can
compound ascorbic acid naturally, but human beings do no have this
ability and have to get this nutrition by foods. Cauliflower,
spinach and cranberry also have rich ascorbic acid except the
fruits like oranges. After getting that ascorbic acid can prevent
scurvy, the manufacturers of natural foods start sales of Vitamin C
capsules. Besides, vitamin C also is added into many fruit juice
Vitamin C mainly used for the production of many medicines and as
the important raw materials in clinical treatment. As food
additives, it has great effect in nutrition, anticorrosion and
flour processing. As feed additives, it can strengthen the immune
system of animals.
25kg/Carton or according to the requirements of the customers. It
can load 20MT in one 20'GP without pallets.
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 lead time?
We can arrange prompt shipment after receipt of the advanced