Details
Product Description：
Human vitamin A is derived from the natural food. Natural vitamin A exists in dif ferent forms. In animal tissues, vitamin A is present in the form of retinoids. However, in plants, the form of vitamin A called carotenoids is contained in the green, orange, and yellow plant tissue. Vitamin A compounds such as retinol, reti nal, carotene, and so on from these foods can be converted to vitamin A in the human body. Therefore, food is the main source of vitamin A.
As early as 1000 years ago, the Qian Jin Yao Fang written by Sun Simiao in Tang Dynasty recorded that animal liver can cure night blindness. This is the early recognition in vitamin A supplementation. The traditional Chinese medicine books also recorded that nourishing the liver can improve eyesight. Researches on the therapy of vitamin A deficient-diseases are mainly related to nourishing the liver and kidney, supplementing essence and blood, and activating qi
| Product.Name |
All-trans-Retinol |
| Melting point |
61-63 °C(lit.) |
| Boiling point |
368.81°C (rough estimate) |
| Density |
0.9933 (rough estimate) |
| Solubility |
Practically insoluble in water. It does not dissolve in dilute mineral acids but dissolves slowly in hot concentrated sulfuric acid. |
| Pka |
3.07±0.10(Predicted) |
| Form |
Solid |
| Color |
White |
| Odor |
Odor of the solvent |
| Mol File |
68-26-8.mol |
| MW |
286.45 |
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Company Profile：
Wuhan Han Sheng New Material Technology Co. Ltd is a professional company which specialized in manufacturing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents.
We have long term cooperation pharmaceutical raw material production plant and a reagent research and development center, with a rich professional background and strong competitive advantage. We have a professional and experienced team and we promise clients to provide the best quality, price and service. During the business cooperation with clients, we always adhere principle of Honesty, Trustworthiness and win-win policy. We guarantee 100% qualification of our products pass through the standard of USA, Mexico, UK, Australia, Canada, Brazil, France, Germany, Spain, Belgium, Sweden, the Netherlands and so on.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Exhibitions:
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Products & Packaging：
Our products are used for pharmaceuticals, pesticides, synthetic dyes, organic chemicals, inorganic chemicals, coatings, spices and essence, cosmetics and toilet products, soaps and synthetic detergents, surfactants, printing inks and their auxiliaries, adhesives, photosensitive materials, magnetic materials, catalysts, reagents, water treatment agents and polymer flocculants, papermaking auxiliaries, leather auxiliaries, synthetic materials auxiliaries, textile printing and dyeing agents and finishing agents, food additives Feed additives, animal drugs, etc.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
About Us
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Shipment & Payment：
*Small quantity: By Fedex, DHL, HKPOST, UPS, TNT or As customers’ requirement
*Bulk order: By air or sea
*Delivery: within 3 days for samples and 10 days for bulk order
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Our Markets:
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
FAQ
-
Are you a trade company or factory
We are a factory with our own trading company.
-
How do you control the quality
Our factory is equipped with professional technicians to inspect the quality around production lines. The inspection test would be made every 2 hours to ensure the production conform to quality standard. We also accept BV, SGS, or any third pary inspection.
-
How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
-
Where is your factory located How can I visit the factory
Our factory located in Hebei, China
-
Can I get some samples
Yes, we can supply sample with free, but the shipping cost be paid by our customers.
-
How to start orders or make payments
Proforma Invoice will be issued first after confirmation of order, enclosed our bank information. Payment could be done by T/T or .
-
How to confirm the product quality before placing order
You can get free samples for some products. You only need to pay the shipping cost or arrange a courier to us and take the samples.
-
How do you treat quality complaint
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.
China (Mainland)