Description
Alpha lipoic acid Quick Details
Chemical Name: DL-Thioctic acid
Other Name: Alpha lipoic acid; α-Lipoic Acid; DL-alpha-Lipoic Acid
CAS No.: 1077-28-7
Molecular Fomula: C8H14O2S2
Chemical Structure:
Molecular weight: 206.33
Appearance: yellow crystal powder, no foreign substance, no obvious odor
Assay: 99%
Alpha lipoic acid Typical Properties
| Items | Specifications | Results | Method |
| Appearance | Slightly yellow crystal powder | Conforms | Organoleptic |
| Identification | Meets the requirements | Conforms | HPLC |
| Melting Point | 60～62℃ | 61.8℃ | USP |
| Specific Rotation | －1.0˚ to + 1.0˚ | 0˚ | USP |
| Loss on drying | ≤0.20% | 0.12% | USP |
| Residue on Ignition | ≤0.10% | 0.02% | USP |
| Heavy Metals | ≤10 ppm | ＜10 ppm | USP |
| Lead | ≤3 ppm | 0.02 ppm | USP |
| Cadmium | ≤1 ppm | 0.2 ppm | USP |
| Mercury | ≤0.1 ppm | 0.01ppm | USP |
| Chromatographic purity | |||
| Single Impurity | ≤0.10% | 0.04% | HPLC |
| Total Impurities | ≤2.0% | 0.08% | HPLC |
| Limit of Polymer content | Conforms | Conforms | TLC |
| Residual Solvent By GC | |||
| Cyclohexane | ≤1000 ppm | 754 ppm | GC |
| Ethyl Acetate | ≤250 ppm | 61 ppm | GC |
| Toluol | ≤20 ppm | Not Detectable | GC |
| Total plate Counts | ≤1000 cfu/g | ＜10 cfu/g | USP |
| Moulds and Yeasts | ≤100 cfu/g | ＜10 cfu/g | USP |
| E.Coli / Salmonella | Absence/g | Not Detectable | USP |
| Staphylococcus Aureate | Absence/g | Not Detectable | USP |
| Particle Size | 100% through 40 mesh | Conforms | USP |
| Loose Bulk Density | 0.36g/ml | USP | |
| Assay | 99%~101% | 99.1% | HPLC |
| Conclusion: Conformed USP41 STANDARD | |||
Alpha lipoic acid Usage
DL-Thioctic acid is widely used for diabetic neuropathy complication medicine and dietary supplements.
Alpha lipoic acid Packaging and Shipping
Packing:25kg/drum
Delivery: by sea/by air
Alpha lipoic acid Storage
This product must be stored in a cool, dry, and sealed container or tank and seal away from light. Storage warehouse must be regularly clearance, ventilate and inspection, be low temperature and dry.
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