1.PURPOSE
Compare the sample from Syntholution and Sample 1(equivalent sample from Chinese producer).
2. TEST CONDITIONS
2.1 SPECIFICATIONS
|
AO1098 |
Specs. |
SYNTHOLUTION |
SAMPLE 1 |
|
APPEARANCE |
WHITE CRYSTALINE POWDER |
CONFORM |
CONFORM |
|
ASSAY(%) |
≥98.0% |
99.16 |
99.10 |
|
VOLATILES(%) |
≤0.3% |
0.14 |
0.18 |
|
MELTING POINT(℃) |
156-161℃ |
160.1-161.5 |
160.1-161.8 |
|
TRANSMITTANCE(%) |
425nm≥98.0% |
98.90 |
98.70 |
|
500nm≥99.0% |
99.40 |
99.30 |
It shows in the comparison test: The specifications are similar between Syntholution & Sample 1.
2.2 MELTING TEST IN OVEN
180℃, 2 hours
Left: Syntholution
Right: Sample 1
180℃ incipient melting
180℃ after 1h
180℃ after 2h
2.3. HPLC TEST
HPLC:
SYNTHOLUTION
SAMPLE 1
HPLC shows slight difference between the assay of the two samples:
The assay of Syntholution: 99.16%
The assay of Sample 1: 99.10%
3.CONCLUTION
Syntholution sample acts better anti-aging test.
Post time: Aug-22-2022