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CAS#: 7782-91-4 | Specifications: Arsenate, phosphate and silicate (%) 0.001 % Max, Assay (MoO3) (%) 85.0 % - Min, Chloride 0.002 % Max, Heavy metals (as Pb) 0.003 % Max, Insoluble in NH4OH (%) 0.01 % Max, Phosphate 0.0005 % Max, Sulfate 0.2 % Max