Product name:  | Ammonium paratungstate  | |
Alias:  | Ammonium tungstate; Ammonium wolframate; APT; dioxido(dioxo)tungsten; diammonium dioxido(dioxo)tungsten  | |
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.  | |