Ammonium Paratungstate APT Appearance:white crystalline powder Purity:wo3 88.5%min Fsss:35-46um Scott Density: 1.8-2.6 g/cm3

Ammonium Paratungstate APT

Grade		APT-0	APT-1
WO3(%min)		88.5	88.5
Impurities(%max)	Al	0.0005	0.0010
	Fe	0.0010	0.0010
	S	0.0007	0.0010
	As	0.0010	0.0010
	P	0.0007	0.0010
	Mo	0.0020	0.0050
	Ca	0.0010	0.0010
	Mg	0.0007	0.0010
	K	0.0010	0.0015
	Na	0.0010	0.0015
	Si	0.0010	0.0010
	Cu	0.0003	0.0005
	Mn	0.0010	0.0010
	Ni	0.0007	0.0010
	Pb	0.0001	0.0001
	Bi	0.0001	0.0001
	Sn	0.0001	0.0003
	Sb	0.0008	0.0010
	V	0.0010	0.0010
	Ti	0.0010	0.0010
	Cr	0.0010	0.0010
	Co	0.0010	0.0010

Formula: 5(NH4)2O.12WO3.5H2O.

Appearance:Free flowing white crystalline powder with no any other cast or foreign matter.

Ignition Loss: 11.5%max

Fsss: 35-46 micron.

Scott Density: 1.8-2.6 G/CM3.

Packing:In iron drums with inside plastic bags of 100kg or 200kg net each.

Remarks:

1)APT-0 is high purity matetial for special uses.2)Material of 40-46micron is mainly used for producing tungsten bar for drawing wire

Ammonium Paratungstate