China Dextran 5 Supplier, Dextran 40 Manufacturer

1. CAS No.: 9004-54-0; MF: C17H32O10 ; E No.: 232-677-5
2. Grade: Medicine Grade
3. Appearance: White powder
4. Package: 25Kg/drum
5. Shelf life: 2 Years
6. Competitive price with high quality
7. Conforms to EP/USP/CP
8. Purity: 99%

Product Description

Dextran is a complex, branched glucan (polysaccharide made of many glucose molecules) composed of chains of varying lengths (from 3 to 2000 kilodaltons). It is used medicinally as an antithrombotic (anti-platelet), to reduce blood viscosity, and as a volume expander in anemia.
The straight chain consists of α-1,6 glycosidic linkages between glucose molecules, while branches begin from α-1,3 linkages. (For information on the numbering of carbon atoms in glucose, see the glucose article.) Dextran is synthesized from sucrose by certain lactic-acid bacteria, the best-known being Leuconostoc mesenteroides and Streptococcus mutans. Dental plaque is rich in dextrans. Dextran is also formed by the lactic acid bacterium Lactobacillus brevis to create the crystals of tibicos, a water kefir fermented beverage which supposedly has some health benefits.

Dextran COA

ITEMS		STANDARD	RESULTS
Characters		A white powder, very soluble in water, very slightly soluble in alcohol	COMPLIES WITH
Identification	Specific optical rotation	+195°~+201°	+197.07°
	Infrared absorption spectrogram	Comparing with the spectrum	COMPLIES WITH
	Infrared absorption spectrogram	obtained from dextran CRS	COMPLIES WITH
Appearance of solution		Clear and colourless	COMPLIES WITH
Acidity or alkalinity		Reaction with phenolphtalein, Na OH and HC1	COMPLIES WITH
Nitrogenous		≤110ppm	<60ppm
Residual solvents		Ethanol: ≤0.5%	0.03%
		Methanol: ≤0.05%	Not detected
		Other residual solvent: ≤0.5%	COMPLIES WITH
Molecular-mass distribution		MW:54 000- 66000	MW:60563
		M10: ≤180 000	M10: 110760
		M90:≥14 000	M90:15241
Heavy metals		≤10ppm	<5ppm
Loss on drying		≤7.0%	4.22%
Sulphated ash		≤0.3%	0.04%
Bacterial endotoxins		≤16IU/g	5IU/g
Microbial contamination		Total viable aerobic≤100/g	<10/g
Microbial contamination		No colibacillus	Not detected

Packaging & Shipping
Dextran Packaging: 25kg/bag or according to client request
Dextran Delivery Detail: 2 weeks after confirm order.
Some of the products can be supplied within 7 days on the strength of EDC warehouse.

Our Services
1. Complex chemical supplier in China with over 5 years of experience.
2. Arrange the orders and shipping with cus requests in time, According to the different
countries export policy provide complete customs clearance documents.
3. Variety of high quality chemical products with competitive price.
FAQ
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,due to different products you choose.
3. How about the packing?
Usually we provide the packing as 25 kg / bag or carton,and also as your request bag.
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.

Home	About Us	Product
News	Guestbook	Contact Us