| 技术指标 |
| 名称 |
优级纯(%) |
分析纯(%) |
化学纯(%) |
球状 |
| 性状 |
白色结晶性粉末 |
|
| 含量(NaF) |
≥99.0 |
≥98.0 |
≥98.0 |
≥98.0 |
| 澄清度试验 |
合格 |
合格 |
合格 |
合格 |
| 水不溶物 |
≤0.01 |
≤0.05 |
≤0.1 |
≤0.05 |
| 干燥失重 |
≤0.3 |
— |
— |
— |
| 酸度(以H+计),mmol/100g |
≤2.5 |
≤5.0 |
≤10.0 |
≤5.0 |
| 碱度(以OH-计),mmol/100g |
≤1.0 |
≤2.0 |
≤4.0 |
≤2.0 |
| 氯化物(Cl) |
≤0.002 |
≤0.005 |
≤0.01 |
≤0.005 |
| 硫酸盐(SO4) |
≤0.01 |
≤0.03 |
≤0.05 |
≤0.03 |
| 氟硅酸盐(SiF6) |
≤0.1 |
≤0.6 |
≤1.2 |
≤0.6 |
| 铁(Fe) |
≤0.002 |
≤0.005 |
≤0.005 |
≤0.005 |
| 重金属(以Pb计) |
≤0.001 |
≤0.003 |
≤0.005 |
≤0.003 |
|
