| 質(zhì)量指標(biāo) |
Specification |
GB 1886.339-2021 |
FCC VII |
| 含量 |
無(wú)水（Na4P2O7），w/% |
Content |
Anhydrous(Na4P2O7),w/% |
96.5-100.5 |
95.0-100.5 |
| 十水（Na4P2O7·10H2O），w/%???????????????? ≥ |
Decahydrate(Na4P2O7·10H2O),w/%????????????? ≥ |
98.0 |
———— |
| 水不溶物，w/%?????????????? ≤ |
Insoluble Substances,w/%???????? ≤ |
0.2 |
0.2 |
| pH值（10g/L溶液） |
pH value(10g/L Solution ) |
9.9-10.7 |
———— |
| 正磷酸鹽，mg/kg???????????? ≤ |
Orthophosphate,mg/kg?????????? ≤ |
通過(guò)試驗(yàn) |
———— |
| 砷（As），mg/kg?????????????? ≤ |
Arsenic (As),mg/kg????????????? ≤ |
3.0 |
3.0 |
| 重金屬（以Pb計(jì)），mg/kg?????? ≤ |
Heavy metal (as Pb),mg/kg ???????≤ |
10 |
———— |
| 鉛（Pb），mg/kg?????????????? ≤ |
Lead (Pb),mg/kg??????????????? ≤ |
4.0 |
4.0 |
| 氟化物（以F計(jì)），mg/kg ???????≤ |
Fluoride (as F),mg/kg??????????? ≤ |
50.0 |
50.0 |
| 灼燒失重，w/% |
無(wú)水物???? ≤ |
Loss on ignition,w/% |
Anhydrous≤ |
0.5 |
0.5 |
| 十水合物 |
Decahydrate |
38.0-42.0 |
38.0-42.0 |
