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Overview
Dextran a multi-use, branched glucan with long, hydrophilic spacer arms that improve the performance of immobilized proteins
acting on macromolecules. Low molecular weight dextran is useful as a stabilizer, volume extender, lubricant, binding platform,
and matrix component. Higher molecular weight dextrans have differing viscosities, aggregation and permeation properties.
Specification
Index | Standard | Test result |
Appearance | Brown fine powder | Complies |
Identification | Positive reaction | Positive reaction |
Chloride | ≤0.25% | 0.15% |
Specific | +190---+200° | 195.0° |
Loss on drying | ≤0.5% | 2.9% |
Molecular weight and molecular division | The heavy even molecular weight should be 32000—42000,10% macro-molecule part heavy even molecular weight do not be bigger than 120000,10% small molecular part heavy even molecular weight not to be smaller than 5000 | The heavy even molecular weight should be 34622,10% macro-molecule part heavy even molecular weight is 102958,10% small molecular part heavy even molecular weight is 7368 |
Heavy metals | ≤0.008% | <0.008% |
Residue on ignition | ≤0.5% | 0.19% |
Ngnition content | ≤0.007% | <0.005% |
Use
Medicine for blood volume expansion, improved plasma colloid osmotic pressure, increase of plasma volume and maintain
blood pressure, prevent shock, can prevent the red blood cell and platelet aggregation, reduce blood viscosity, which has the
effect of improving microcirculation.
