| Item | Requirement | Results | ||
| Description | White crystalline powder | White crystalline powder | ||
| Identification | 1、Solubilize with water then add acetate,then get precipitate,clean the precipitate and dry it,then test it as blow three reactions: | Meet the requirements of (1)(2) | ||
| A.With copper sulfate precipitation reaction of yellow green | ||||
| B.The infrared absorption spectrum | ||||
| C.The reaction of primary aromatic amine | ||||
| 2、The tests of sodium | ||||
| Acidity or alkalinity | PH 9.6-10.5 | PH 10.3 | ||
| Color and clarity of solution | ≤Y3 | ＜Y3 | ||
| Water contains | ≤6.0% | 5.6% | ||
| Heavy metals | ≤20ppm | ＜20ppm | ||
| Assay | ≥98.0% | 99.80% | ||