Product Name

Alpha lipoic acid

Batch No.

20230612

MFG.  Date

2023.06.12

EXP. Date

2025.06.11

Analytical date

2023.06.12

Batch quantity

500kg

ITEMS

SPECIFICATIONS

RESULTS

Characters

A yellow crystalline powder,with a characteristic Odor , tasteless

A yellow crystalline powder,with a characteristic Odor , tasteless

Identification

IR

Meets the requirements

Melting point

60.0～62.0℃

60.4～61.4℃

6,8-epitrithiooctanoic

≤0.1%

0.09%

Single unknown impurities

≤0.1%

0.08%

Total impurities

≤0.5%

0.28%

Loss on drying

≤0.2%

0.03%

Residue on ignition

≤0.1%

0.04%

Heavy metals

≤10ppm

＜10ppm

Assay

≥99.0%

99.36%

Residual solvents(GC)

Toluene

≤10ppm

Non detectable

Acetic ether

≤250ppm

78ppm

Cyclothexane

≤1000ppm

600ppm

Acetone

≤500ppm

Non detectable

Conclusion

Complies