Description

Blue Dextran is a high-molecular-weight, water-soluble polysaccharide derivative, widely recognized for its distinctive blue color and utility as a marker in separation science. Its primary value lies in its application as a void volume marker in gel filtration chromatography, aiding in the calibration of columns and the determination of molecular weight distributions. This product is essential for researchers and quality control laboratories in the pharmaceutical, biotechnology, and academic sectors, where precise molecular sizing and separation are critical.

Application

• Gel Filtration Chromatography: Used as a standard void volume marker to calibrate columns and determine the exclusion limits of various gel media.
• Molecular Weight Determination: Serves as a high-molecular-weight reference standard for estimating the molecular sizes of proteins and other polymers.
• Membrane Integrity Testing: Employed to test the integrity and pore size of ultrafiltration and dialysis membranes.
• Pharmacokinetic Studies: Utilized as a non-absorbable marker in research to study gastrointestinal permeability and blood-brain barrier function.
• Teaching and Research: A fundamental tool in biochemistry and molecular biology laboratories for educational and investigative purposes.
• Diagnostic Reagent Manufacturing: Can be incorporated into diagnostic kits and reagents where a colored, high-molecular-weight tracer is required.

Basic Information

Product Name	Blue Dextran
CAS No.	9049-32-5
Molecular Formula	(C6H10O5)n·C32H24N6O6S4Na2
Molecular Weight	~2,000,000 (average)
Synonyms	Dextran Blue; Blue Dextran 2000; C.I. Reactive Blue 2 Dextran Conjugate; Dextran, Reactive Blue 2 dye conjugate; Blue Dextran, for chromatography; Dextran, Brilliant Blue conjugated; Pharmacia Blue Dextran; Azur Dextran
EINECS	Contact for details

Quality Control

Our Blue Dextran is produced under a rigorous quality management system. Each batch is tested to ensure consistent performance as a chromatographic marker. Key parameters such as absorbance profile, solubility, and molecular weight distribution are verified. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and performance specifications is provided with every shipment to guarantee traceability and compliance with your research or production standards.

Storage

Preserve in a tightly closed container, protected from light. Store at a controlled room temperature (15-25°C). Keep the container in a dry place. For long-term stability, consider storage under cool, dark conditions.

Specification

Item	Specification
Appearance	Blue to dark blue powder or granules
Identification (IR)	Conforms to standard
Solubility (in Water)	Complete, yielding a clear blue solution
Absorbance Maximum (λmax)	~620-630 nm
Moisture Content	< 10.0 %
Assay (Dextran Content)	> 85.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.