English Name: Dextran T20; Mucrose; Glucose polymer
Other Names: Dextran 20; Dextran D20
CAS Number: 9004-54-0
Molecular Formula: (C6H10O5)n
Molecular Weight: ~20000

Grade: BR
Identification: Positive reaction
Chloride: ≤0.1%
Loss on drying: ≤7.0%
Heavy metals: ≤10ppm
Appearance: White or off-white powder, insoluble in ethanol, stable in neutral solutions, hydrolyzed under strong acid and elevated temperatures, with end groups oxidizable in alkaline solutions. Highly soluble in water. Odorless and tasteless. Its solution can be sterilized by autoclaving at 100-115°C for 30-45 minutes. Dextran is present in the mucus secreted during the growth of certain microorganisms. It is primarily composed of D-glucopyranose linked by α,1→ bonds, with branching points at 1→2, 1→3, and 1→4 linkages. Its structure varies depending on the microbial species and growth conditions.
Application: Biochemical research. Cell studies, precipitin reactions, separation of leukocytes from whole blood. Immunological research. Permeability studies. Determination of inert colloidal occupied volume and biological cell wall volume.
Storage: RT, shelf life 5 years