| 指标名称 | Name of index | GB30603-2014 | FCC-V | E282 | |
| 色泽和组织状态 | Appearance description |
无色针状结晶性粉末(无水) 无色结晶性颗粒(三水) |
White crystalline odorless powder ,anhydrous
White crystalline odorless granular, trihydrate
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| 含量，% | Assay(C2H3NaO2,on dried basis)% | ≥ | 99.0-101 | 99.0-101 | ≥98.5 |
| PH值(1%水溶液) | PH (1%aqueous solution) | 8.0-9.5 | |||
| 游离碱 | Alkalinity % | ≤ | Pass |
0.2 ,anhydrous 0.05 ,trihydrate |
|
| 钾实验 | Potassium Compounds% | ≤ | Pass | Pass test | |
| 干燥失重 |
Loss on drying % |
≤ |
2.0,无水 36.0-42.0,三水 |
1.0 anhydrous 36.0-41.0 trihydrate |
2.0(Anhydrous 120℃,4hours) 36.0-42.0(Trihydrate ,120℃,4hours) |
| 甲酸及其他易氧化物实验 |
Formic acid, formats and other oxidisable substances % |
≤ | 0.1 | ||
| 铅% | Lead(Pb)% | ≤ | 0.0002 | 0.0002 | 0.0002 |
| 砷盐（以As计），% | Arsenic (As)% | ≤ | 0.0003 | ||
| 汞% |
Mercury (Hg) % |
≤ | 0.0001 | ||
