China Alpha Lipoic Acid 99% USP/Ep Grade, Find details about China Skin Care, Health Food from Alpha Lipoic Acid 99% USP/Ep Grade
Analytical Items | Standard | |
Appearance | Slightly yellow crystal powder | |
Identification | Meets the requirements | |
Melting Point | 60.0 ~ 62.0ºC | |
Specific Rotation | -1.0°~ +1.0° | |
Loss on Drying | ≤0.20% | |
Residue on Ignition | ≤0.10% | |
Heavy Metals | ≤10ppm | |
Lead | ≤3ppm | |
Cd | ≤1ppm | |
Hg | ≤0.1ppm | |
Particle size | 100% through 40 mesh | |
Assay (dried basis) | 99.0% ~ 101.0% | |
Chromatographic Purity | ||
Single Impurity | ≤0.10% | |
Total Impurities | ≤2.0% | |
Limit of polymer content | Confirms | |
Residual Solvent | ||
Cyclohexane | ≤1000ppm | |
Ethyl Acetate | ≤250ppm | |
Toluene | ≤20ppm | |
Total plate count | <1000cfu/g | |
Yeast & Mould | <100cfu/g | |
E.Coli | Negative | |
Staphylococcus aureus | Negative |