Tungsten Trioxide

Sr.no.	Characteristics	Unit	Specifications
1	CAS no.	-	1314-35-8
2	Appearance	-	Yellow to greenish (Canary) fine powder.
3	Assay	%	99.0 min.
4	Cations (like Fe, Cu, Mg, Ca or other heavy metals)	%	0.01-0.1 max.
5	Anions (like NO₃- ; SO₄-; free Cl-, PO₄³-)	%	0.05-0.1 max.