|
Inspection Items
|
Accepted Standard
|
Results
|
|
Appearance
|
White or off white powder
|
Off white powder
|
|
Optical rotation
|
﹢182.0°～﹢192.0°
|
﹢186.0°
|
|
clarity and color of solution
|
λ450nm absorbance <0.058,turbidity not deeper than NO1 standard
|
Complies
|
|
Identification
|
(1)To complies positive reaction
|
Complies
|
|
(2) complies with standard
|
Complies
|
|
|
pH
|
4.5-6.5
|
6.2
|
|
Intrinsic viscosity [η]
|
15.0-19.0
|
17.5
|
|
Heavy metals
|
≤ 10ppm
|
Complies
|
|
Loss on drying
|
≤ 5.0%
|
3.8％
|
|
Sodium chloride(NaCl)
|
≤ 0.1％
|
<0.1％
|
|
MS
|
0.43-0.55
|
0.49
|
|
Glycol
|
≤ 0.062％
|
Complies
|
|
Chlorethyl alcohol
|
≤ 0.002％
|
Complies
|
|
weight-average molecular weight
|
180000-290000
|
213350
|
|
weight-average molecular weight(10％department)
|
≤780000
|
547000
|
|
weight-average molecular weight(90％department)
|
≥15000
|
26069
|
|
Microbial pollution
|
Yeast and mould<10
|
Complies
|
|
Assay(on dry base ,deducts the sodium chloride)
|
98.0％～101.5％
|
100.1％
|
|
Conclusion : Complies with enterprise standard
|
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