Vitamin A
Vitamin A is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids, among which beta-carotene is the most important. Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision. Vitamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the light-absorbing molecule, that is necessary for both low-light (scotopic vision) and color vision. Vitamin A also functions in a very different role as an irreversibly oxidized form of retinol known as retinoic acid, which is an important hormone-like growth factor for epithelial and other cells.
Item |
Standard |
Appearance |
White free-flowing powder |
loss on drying |
3.9% |
assay |
521,000iu/g |
arsenic |
<1.0mg/kg |
lead(pb) |
<0.01mg/kg |
total bacterial |
<10cfu/g |
coliform |
0.3mpn/g |
mould &yeast |
<10cfu/g |
Storage: in dry, cool, and shaded place with original packaging, avoid moisture, store at room temperature.
Shelf Life: 48 months
Package:in 25kg/bag
delivery:prompt
1. What’s your payment terms?
T/T or L/C.
2. What’s your delivery time?
Usually we will arrange the shipment in 7 -15 days.
3. How about the packing?
Usually we provide the packing as 25 kg / bag or carton. Of course, if you have special requirements on them, we will according to you.
4. How about the validity of the products?
According to the products you ordered.
5. What documents you provide?
Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.
6. What is loading port?
Usually is Shanghai,Qingdao or Tianjin.