Hot Sale Dietary Sepplement Vitamin D3 (as Cholecalciferol) with CAS 67-97-0
Product Description
Product Name
Cholecalciferol
Other Name
Vitamin D3
CAS
67-97-0
MF
C27H44O
MW
384.64
EINECS
200-673-2
Melting Point
83-86 °C(lit.)
Boiling Point
451.27°C (rough estimate)
Density
0.9717 (rough estimate)
Vapor Pressure
2.0 x l0-6 Pa (20 °C, est.)
Refractive Index
1.5100 (estimate)
Flash Point
14 °C
Appearance
White Crystalline Powder
Storage Temp.
2-8°C
Solubility
Practically insoluble in water, freely soluble in ethanol
(96 percent), soluble in trimethylpentane and in fatty oils. It is sensitive to air, heat and light. Solutions in solvents without an antioxidant are unstable and are to be used immediately.
A reversible isomerisation to pre-cholecalciferol takes place in solution, depending on temperature and time. The activity is due to both compounds.
Vitamin D is a vitamin. It can be found in small amounts in a few foods, including fatty fish such as herring, mackerel, sardines and tuna. To make vitamin D more available, it is added to dairy products, juices, and cereals that are then said to be “fortified with vitamin D.” But most vitamin D – 80% to 90% of what the body gets – is obtained through exposure to sunlight. Vitamin D can also be made in the laboratory as medicine.
At the same time, vitamin D is a fat-soluble vitamin, also seen as a hormone precursor acting on calcium and phosphorus metabolism.
Functions
Vitamin D3 has the following physiological functions:
1. Increase the absorption of calcium and phosphorus by the body, so that the levels of plasma calcium and plasma phosphorus are saturated.
2. Promote growth and bone calcification, promote the integrity of the teeth.
3. Increase the absorption of phosphorus through the intestinal wall, and increase the reabsorption of phosphorus through the renal tubule.
4. Maintain the normal level of citrate in the blood.
5. Prevent amino acids through the kidneys loss.
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Q1: How to start orders or make payments? A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by Alibaba Trade Assurance (Credited Card Accepted),T/T, Western Union or Paypal or Escrow(Alibaba).
Q2: How to confirm the Product Quality before placing orders? A: You can get samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q3: How about delivery leadtime? A: Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
Q4: Is there a discount? A: Different quantity has different discount.
Q5: How do you treat quality complaint? A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
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