China Herbal Extract 98% Quercetin, Sophora Japonica Extract, Find details about China Sophora Japonica Extract, Sophora Japonica from Herbal Extract 98% Quercetin, Sophora Japonica Extract
Item | Specification | Result |
Assay (Anhydrous substance) | 95.0%-101.5% | 95.2% |
Appearance | Yellow, crystalline powder | Conforms |
Solubility | Practically insoluble in water, Soluble in aqueous alkaline sol. | Conforms |
Loss on drying | ≤12.0% | 10.95% |
Sulphated ash | ≤0.5% | 0.14% |
Melting point | 305-315°C | 310-312°C |
Total Heavy Metals | ≤10ppm | Conforms |
Pb | ≤3.0ppm | Conforms |
As | ≤2.0ppm | Conforms |
Hg | ≤0.1ppm | Conforms |
Cd | ≤1.0ppm | Conforms |
Microbiological | ||
Total Plate Count | ≤1000cfu/g | Conforms |
Total Yeast & Mould | ≤100cfu/g | Conforms |
E. Coli | Negative | Negative |
Salmonella | Negative | Negative |