Origin	China
CAS No.	62-46-4
Purity	USP31/EP5.5

Product Name: Thioctic Acid(Alpha  Lipoic Acid)
Chemical Formula: C8H14O2S2, 206.3:
CAS No.: 62-46-4
Standard:USP31/EP5.5

Appearance:Yellow crystalline powder
Identification IR, LC conform
Specific rotation:-1.0~ +1.0
Melting point 60.0~62.0 degree centigrade
Loss on drying ≤0.2%
Residue on ignition ≤0.1%
Heavy metals ≤0.001%
Related substances
6,8-Epitrithioctanoic acid: ≤0.1%
Single unknown impurities: ≤0.1%
Total impurities: ≤0.3%
Polymer ≤2%
Residual solvents:Toluene: ≤30ppm
Ethyl acetate: ≤250ppm
Cyclohexane ≤1000ppm
Acetone ≤500ppm
Microbial contamination
Total microbial count: ≤1000 cfu/g
Molds and yeasts: ≤100 cfu/g
Escherichia coli: Absent
Salmonella: Absent
Pseudomonas acruginosa: Absent
Staphylococcus aureus: Absent
Assay 99.0%~101.0%, on the dried substance

Storage:Preserve in tight containers, protected from light in dry cool place.