Grade
AMT-1
AMT-2
WO3 content (%)
≥88
≥84
Solubility(25℃)
300gAMT/100ml water
Water insoluble matter(%)
≤0.1
≤0.5
Fe
0.0020
0.0050
Si
0.0060
Mo
0.010
0.030
Ca
0.0010
Al
Mg