二铵 AMMONIUM DIHYDROGEN PHOSPHATE
质量指标 | Specification | GB1886.330-2021 | FCC VII |
含量(以NH4H2PO4计),w/% | Content(as NH4H2PO4),w/% | 96.0-102.0 | 96.0-102.0 |
氟化物(以F计),mg/kg ≤ | Fluorides(as F),mg/kg ≤ | 10.0 | 10.0 |
(As),mg/kg ≤ | Arsenic(As),mg/kg ≤ | 3.0 | 3.0 |
重金属(以Pb计),mg/kg ≤ | Heavy metal(as Pb),mg/kg ≤ | 10 | ———— |
铅(Pb),mg/kg ≤ | Lead(Pb),mg/kg ≤ | 4.0 | 4.0 |
pH值(10g/L溶液) | pH value (10g/L Solution ) | 4.3-5.0 | ———— |