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Inspection Items
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Accepted Standard
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Results
|
|
Appearance
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White or off white powder
|
Off white powder
|
|
Optical rotation
|
﹢182.0°～﹢192.0°
|
﹢188.5°
|
|
clarity and color of solution
|
λ450nm absorbance <0.10,turbidity not deeper than NO2 standard
|
Complies
|
|
Identification
|
(1)To complies positive reaction
|
Complies
|
|
(2) complies with standard
|
Complies
|
|
|
pH
|
4.5-6.5
|
6.1
|
|
Intrinsic viscosity [η]
|
13.0-17.0
|
15.1
|
|
Heavy metals
|
Not more than 0.005％
|
Complies
|
|
Loss on drying
|
Not more than 6.0%
|
4.5％
|
|
Sodium chloride(NaCl)
|
Not more than0.75％
|
0.30％
|
|
MS
|
0.38-0.45
|
0.42
|
|
Glycol
|
Not more than 0.062％
|
Complies
|
|
Chlorethyl alcohol
|
Not more than 0.0005％
|
Complies
|
|
weight-average molecular weight
|
110000-150000
|
136800
|
|
weight-average molecular weight(90％department)
|
Not more than 380000
|
269690
|
|
weight-average molecular weight(10％department)
|
Not less than15000
|
46289
|
|
Bacterial endotoxins
|
Not more than 10EU/g
|
Complies
|
|
Microbial limit
|
Must complies
|
Complies
|
|
Assay(on dry base ,deducts the sodium chloride)
|
Not less than 98.5％
|
99.8％
|
|
Conclusion : Complies with enterprise standard
|
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