ITEM | SPECIFICATION |
Appearance | Slightly yellow crystal powder |
Solubility(In NaOH) | Clear and pale yellow |
Melting Point | 60~62ºC |
Specific rotation | -1.0°to +1.0° |
Loss on drying | ≤0.2% |
Residue on Ignition | ≤0.1% |
Loose density | / |
Particle size | 100% pass 40mesh |
Heavy metals | ≤10ppm |
Pb | ≤ 3 ppm |
Cd | ≤ 1 ppm |
Hg | ≤ 0.1 ppm |
Limit of polymer content | ≤2.0 % |
Residual of C yclohexane | ≤ 10 00ppm |
Residual of E thyl Acetate | ≤250ppm |
Residual of T oluene | ≤ 2 0ppm |
Assay of Alpha Lipoic Acid | 99%~101% |
Single unknown impurity | ≤0. 1 % |
Total impurities | ≤ 2.0 % |
Total aerobes counts | ≤1000 CFU/g |
Moulds and Yeasts | ≤100 CFU/g |
E.coli/Salmonella | Absence/g |
Staphylococcus aureate | Absence/g |
Package | 25kg/Fiber drum |
Storage condition | Store in a well closed place with constant low temperature and no direct sun light |
Shelf life | Two years when properly stored |