Items
Specifications
Results
Appearance
White or off white powder
Off white powder
Identification
1H- NMR spectrum
Complied
Average MW
4000-7000 Daltons
5530
Content of LMW component
NMT 12.0 %
8.6%
Ph
4.5 to 6.5
5.5
Sulphur content
13.0 to 20.0 wt%
15.3%
D-Glucuronic acid content(半乳糖醛酸)
7.0 to 12.0 wt%
9.3%
Heavy metals
NMT 30 ppm
Passed
Solubility
Soluble in water, sparingly soluble in 0.1 N NaOH solution and practivally insoluble in methanol
The product conforms to the above specifications
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