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Alpha Lipoic Acid

SKU : AAS022
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CAS number

62-46-41077-28-7

molecular formula

C8H13O2S2

standard

USP32

Package

25kg/drum
ITEMS LIMIT
Product name Alpha lipoic acid (Thioctic Acid)
Appearance Yellowish crystalline powder
Identification(HPLC) Meets the requirements
Melting point(B.P) 60-62℃
Solubility(1N NaOH) Clear and pale yellow
Residue on Ignition ≤0.10%
Heavy metals ≤10 ppm
Chloride  ≤0.10%
Loss on drying
(Vacuum 40℃ 3hr)
≤0.20%
Assay(by HPLC,USP Method) 99.0-101.0%
Specific optical rotation -1 °~+1 °
Related substance(by HPLC)  
  Single Impurity ≤0.10%
  6,8-Epitrithiooctanoic acid ≤0.10%
  Total Impurities ≤0.50%
Polymers(by TLC) ≤2.0%
Residual Solvents(by GC)  
  Toluene ≤30 ppm
  Ethyl Acetate ≤250 ppm
  Cyclohexane ≤0.20%
Microbiology  
  Total aerobic counts ≤1000 cfu/g
  Mould & Yeast ≤100 cfu/g
  E.coil Not detectable
  Salmonellas Not detectable

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