Executive standard:Q/SWYF001-2011 |
|
Item |
Index |
Ammonium fluoride contentw/% ≥ |
95.0 |
Free acid (HF) w/% ≤ |
1.0 |
Fluosilicate[ (NH4) 2SiF6] w/% ≤ |
0.2 |
Sulfatew/% ≤ |
0.2 |
Moisture w/% ≤ |
4.0 |
Iron Few/% ≤ |
0.01 |
Heavy metal (Pb) w/% ≤ |
0.001 |
Fujian Shaowu Yongfei Chemical Co., Ltd.
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