质量指标 | Specification | GB25567-2010 |
焦磷酸二氢二钠(Na2H2P2O7),w/% | Content(Na2H2P2O7) | 93.0~100.5 |
砷( As),mg/kg ≤ | Arsenic | 3 |
氟化物(以F计),mg/kg | Fluoride | 50 |
重金属(以Pb计),mg/kg ≤ | Heavy | 10 |
水不溶物,w/% ≤ | Water | 1.0 |
铅(Pb),mg/kg ≤ | Lead | 2 |
pH(10g/L | pH | 4.0±0.5 |
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