Alpha Lipoic Acid
Assay:99%-101%
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| Item | Specification | Result |
| Assay(by HPLC) | 99%-101% | 99.29% |
| Appearance | Yellowish powder | Complies |
| Identification(HPLC) | Meets the requirements | complies |
| Melting point(B.P) | 60-62 | 61.7 |
| Residue on Ignition | 0.10% | 0.04% |
| Heavy metals | 10ppm | <10ppm |
| Chloride | 0.10% | <0.07% |
| Loss on drying(Vacuum 40 3hr) | 0.20% | 0.03% |
| Specific Optical Rotation | -1~+1 | Complies |
| Single Impurity | 0.10% | 0.04% |
| 6,8-Epitrthiooctanoic Acid | 0.10% | 0.01% |
| Total Impurtities | 0.50% | 0.06% |
| Polymers(by TLC) | 2.0% | <2.0% |
| Residual Solvents(by GC) |
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| toluene | 30ppm | <20ppm <20g Alpha Lipoic Acid Thioctic acid powder Best Anti-aging material for cosmetic dietary supplement
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