Dextran 40 CAS 9004-54-0

Characters

White   powder, tasteless and odourless, easily soluble in hot water, insoluble in   ethanol.

Specific   Optical Rotation

+190°   ~ +200°

Identification

Should   be positive

Chloride

≤0.25%

Nitrogen

≤0.007%

Loss   on drying

 ≤5.0%

Residue   on ignition

 ≤0.5% 

Heavy   Metals

 ≤0.0008%

Molecular-Mass   Distribution

 32000～42000

 ≤120000

 ≥5000

Molecular weight

35000~45000

Molecular weight distribution

M₁₀ ≤110000

M₉₀ ≥7000

Solubility

Very soluble in water, very slightly in alcohol, Clear   and colorless solution

Identification

Specific optical rotation

+195.0~+201.0°

Infrared absorption spectrogram

Comparing with the spectrum obtained from dextran CRS

Acidity / alkalinity

Reaction with phenolphthalein ,NaOH and HCl

Nitrogen

≤110ppm

Residual solvents

Ethanol

≤0.5%

Methanol

≤0.05%

Other

≤0.5%

Heavy metals

≤10ppm

Loss on drying

≤7.0%

Sulphated ash

≤0.3%

Bacterial endotoxins

<10 IU/g

Total viable aerobic

≤100 CFU/g

No colibacillus

Not detected

Appearance

White powder