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a-硫辛酸,1077-28-7,質(zhì)檢單
CERTIFICATE OF ANALYSIS
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Product Name |
Alpha lipoic acid |
Batch No. |
20230612 |
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MFG. Date |
2023.06.12 |
EXP. Date |
2025.06.11 |
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Analytical date |
2023.06.12 |
Batch quantity |
500kg |
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ITEMS |
SPECIFICATIONS |
RESULTS |
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Characters |
A yellow crystalline powder,with a characteristic Odor , tasteless |
A yellow crystalline powder,with a characteristic Odor , tasteless |
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Identification |
IR |
Meets the requirements |
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Melting point |
60.0～62.0℃ |
60.4～61.4℃ |
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6,8-epitrithiooctanoic |
≤0.1% |
0.09% |
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Single unknown impurities |
≤0.1% |
0.08% |
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Total impurities |
≤0.5% |
0.28% |
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Loss on drying |
≤0.2% |
0.03% |
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Residue on ignition |
≤0.1% |
0.04% |
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Heavy metals |
≤10ppm |
＜10ppm |
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Assay |
≥99.0% |
99.36% |
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Residual solvents(GC) |
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|
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Toluene |
≤10ppm |
Non detectable |
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Acetic ether |
≤250ppm |
78ppm |
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Cyclothexane |
≤1000ppm |
600ppm |
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Acetone |
≤500ppm |
Non detectable |
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Conclusion |
Complies |
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