Payment: T/T, L/C Product Origin: China Shipping Port: Beijing/Shanghai/Hangzhou Order (MOQ): 25kg Lead Time: 3 working days Production capacity: 800kg/month Storage condition: Stored in cool, dry place, room temperature. Package material: drum Package size: 25kg/drum Safety information: Not dangerous goods| Item | Specification |
| Appearance | White or almost white crystals or crystalline powder |
| Identification | Dissolve 1mg of sample with 2ml of sulfuric acid, add three drops of chromotropic acid solution, heating on a water-bath at 40℃ for 10 minutes, purple colour is obtained. |
| UV absorption Max. at 258, 266, 326 and 340nm. | |
| IR spectra is consistent with CRS. | |
| Chlorides | ≤0.012% |
| Loss on drying | ≤0.2% |
| Residue on ignition | ≤0.1% |
| Heavy metals | ≤20ppm |
| Assay | ≥99.0% (on dried substance) |