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Ammonium Metatungstate

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Molecular Formula:(NH4)6H2W12O40·XH2O

Appearance: White crystallized powder or light yellow.

Application: Mainly used for petroleum industry. It's the basic raw material of W-base catalyzer used in oil refinery.

Grade and Chemical Composition:

GradeAMT-1AAMT-2A
AMT-1BAMT-2B
AMT-1CAMT-2C
Purity Min.(%)99.9599.90
Main Comp. WO3 MIN.(%)83.083.0
Content of Other Chemical Element Max.(%)Al0.0010.001
As0.0010.001
Bi0.00010.0001
Ca0.0010.003
Cr0.0010.001
Cu0.0010.003
Fe0.0020.003
K0.00150.002
Mg0.0010.002
Mn0.0010.001
Mo0.0050.01
Na0.00150.002
Ni0.0010.001
P0.0010.003
Pb0.00010.0001
S0.00050.001
Sb0.0010.002
Si0.0010.002
Sn0.00010.0003
Ti0.0010.002
V0.0010.002
Matter Undissolved in Water Max0.50.5
 PH Value3.0-4.53.0-4.5

Pre: Ammonium Paratungstate

Next: Tungsten Trioxide

     
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