| 質量指標 |
Specification |
GB 1886.328-2021 |
FCC VII |
| 含量（Na2H2P2O7），w/% |
Content (Na2H2P2O7),w/%?? ≥ |
94.0 |
93.0-100.5 |
| 砷（As），mg/kg????????????????? ≤ |
Arsenic (As),mg/kg??????? ≤ |
3.0 |
3.0 |
| 氟化物（以F計），mg/kg?????????? ≤ |
Fluoride (as F),mg/kg?????? ≤ |
50.0 |
50.0 |
| 重金屬（以Pb計），mg/kg????????? ≤ |
Heavy metal (as Pb),mg/kg ?≤ |
10 |
———— |
| 水不溶物，w/%????????????????? ≤ |
Insoluble substances,w/% ??≤ |
0.6 |
1.0 |
| 鉛（Pb），mg/kg????????????????? ≤ |
Lead (Pb),mg/kg???????? ≤ |
2.0 |
2.0 |
| pH（10g/L溶液） |
pH (10g/L Solution) |
4.0±0.5 |
———— |
