Alpha Lipoic Acid Description Common Name: ALPHA LIPOIC ACID Chemical Category: Pharmaceutical grade CAS Number: 62 - 46 - 4 Chemical Name: 5-(1, 2-dithiolan-3-yl) valeric acid Molecular Formula: C8H14O2S2 HS Code: 2934 9990.90 Specification Characters: A yellow crystalline powder, with a characteristic Odor, tasteless Identification Meets the requirements Related substances(HPLC) 6, 8-Epitrithiooctanoic acid: 0.1% max Single unknown impurities: 0.1% max Total impurities: 0.5% max Loss on drying: 0.2% max Residue on ignition: 0.1% max Heavy metals:10ppm max Assay: 99.0% min Residual solvents(GC) Toluene: 30ppm max Acetic ether: 250ppm max Cyclohexane: 1000ppm max Acetone: 500ppm max Package Packing in 25kg cardboard drum, inner sealed with 25kg aluminum foil bag. Storage Storage out of sunlight, sealed for two years.