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Executive standard:GB28655-2012 |
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Item |
Index |
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Superior product |
First-class product |
Qualified product |
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Ammonium bifluoride (NH4HF2) (dry basis) w/% ≥ |
98.0 |
97.0 |
96.0 |
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Ammonium fluosilicate[ (NH4) 2SiF6]w/% ≤ |
0.5 |
1.5 |
3.0 |
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Drying loss w/% ≤ |
1.5 |
3.0 |
4.0 |
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Ignition residue w /% ≤ |
0.1 |
0.2 |
—— |
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Sulfate (SO4) w/% ≤ |
0.1 |
0.1 |
—— |
Fujian Shaowu Yongfei Chemical Co., Ltd.
Add: No. 18, Xin' an Road, Shaowu City, Fujian Province, China
Foreign Trade Department Tel: +86-599-6655932/6654968 Fax: +86-599-6654591
Domestic Trade Department Tel: +86-599-6654866/6654968 Fax: +86-599-6655755
High Purity Chemical Product Department Tel: +86-599-6655536/6654968 Fax: +86-599-6655755