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Ammonium Paratungstate Tungsten

Grade WO3 (%,min) Impurities (%,max )
As Fe Ca (K+Na) Co Mg
Special 88.8 0.001 0.001 0.001 0.002 0.0005 0.0005
1st 88.5 0.001 0.001 0.001 0.002 0.001 0.0005

Impurities(%,max )
Mn Ni Si Ti Mo Cu V P
0.0005 0.0005 0.002 0.0005 0.002 0.0005 0.0005 0.0007
-- 0.0007 0.002 0.001 0.005 0.0007 0.001 0.0007

Impurities(%,max )
S Cr Al Sb Pb Sn Bi Cd
0.0007 0.0003 0.0003 0.0002 0.0001 0.0001 0.0001 0.0001
0.0007 -- 0.0005 0.0005 0.0001 0.0001 0.0001 0.0001

Igniting loss(%) Appareent density(g/cm3) Screen size  (mesh)
11.2 2~2.4 -80,100%
11.5 2~2.4 　

Packing:In sealde plastic bags with outer iron drums of 100/200 kgs net each. we can meet your special requirements.