◆　Ammonium Metatungstate
Molecular Formula：(NH4)6H2W12O40.XH2O
Appearance: White crystallized power
Application: Mainly used for petroleum industry, it's the basic raw material of W-base cata-lyzer used in oil refinery

Grade
AMT-1
AMT-2
Purity Min.(%)
99.95
99.90
Main Comp WO3 Min.(%)
85.0
83.0
Content of other Chemical,Element Max.(%)
Al
0.001
0.001
As
0.001
0.001
Bi
0.0001
0.0001
Ca
0.001
0.003
Cr
0.001
0.001
Cu
0.001
0.003
Fe
0.002
0.003
K
0.0015
0.002
Mg
0.001
0.002
Mn
0.001
0.001
Mo
0.005
0.01
Na
0.0015
0.002
Ni
0.001
0.001
P
0.001
0.003
Pb
0.0001
0.0001
S
0.0007
0.001
Si
0.001
0.002
Sb
0.001
0.002
Ti
0.001
0.001
V
0.001
0.001
Mattrer Undissolved In Water Max.
0.5
0.5
PH Value
3.0-5
3.0-5
NOTE:Any Particular Requirements to The Products Can Be Discussed.
South-East Nonferrous Metal LTD.,Hengyang Hunan