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Ammonium paratungstate
Product name: Ammonium paratungstate
Alias: Ammonium tungstate; Ammonium wolframate; APT; dioxido(dioxo)tungsten; diammonium dioxido(dioxo)tungsten
English name: Ammonium paratungstate
CAS no.: 11120-25-5;14311-52-5
Molecular formula: 3(NH4)2O-7WO3-6H2O
Molecular weight: 3060.46
Structural formula:
 

Grade

APT-1

APT-2

Main content O3(%)

≥88.5

≥88.5

Al

0.0005

0.001

AS

0.001

0.002

Bi

0.0001

0.0001

Ca

0.001

0.002

Cd

0.0001

0.0001

Co

0.001

0.002

Cr

0.001

0.002

Cu

0.0005

0.0008

Fe

0.001

0.003

Mg

0.0005

0.001

Mn

0.0005

0.001

Mo

0.003*

0.01*

Na+K

0.002

0.004

Ni

0.0007

0.001

P

0.0007

0.002

Pb

0.0001

0.0001

S

0.0007

0.002

Si

0.001

0.003

Sb

0.0005

0.001

Sn

0.0001

0.0001

Ti

0.001

0.001

V

0.001

0.001

Grade

APT-1

APT-2

 

Physical specification

 

Ignition loss

<11.50%

<11.50%

Loose specific weight

1.8-2.3g/cm3

1.8-2.3g/cm3

Average particle size

25-50u

25-50u

Sieve size

-40 mesh (100%)

-40 mesh (100%)

 
Uses: The product can be used in producing tungsten trioxide, blue tungsten oxide, tungsten powder, tungsten rod, tungsten wire, and hard alloy, etc.
Packing, storage and transportation: The product is packed by 50KG iron drum.
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