Solubility: Freely soluble in water,sparingly soluble in methanol,practically insoluble in ethanol, in n-hexane, in 1-butanol, in acetonitrile,in 2-propanol and in ethyl acetate.
Identification: IR
Average Degree of Substitution: 6.2~6.9
Sodium: Identify test are positive for Sodium
Assay: 95.0%~105.0%
Beta Cyclodextrin: ≤0.1%
1,4-Butane Sultone: ≤0.5ppm
Sodium Chloride: ≤0.2%
4-Hydroxybutane-1-sulfonic Acid: ≤0.09%
Bacterial endotoxins: ≤20EU/g
The total aerobic microbial count: ≤100cfu/g
The total combined moulds and yeasts count: ≤50cfu/g
Escherichia coli: Absence
Clarity of solution: 30%(w/v) solution is clear and essentially free from particles of foreign matter.
pH: 4.0~6.8
Water content: ≤10.0%
Packaging and Storage: Preserve in well-closed containers,and store at room temperature. Protect from moisture.
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