Appearance: White Crystalline Powder Assay: 99.0 %Min. Insoluble in Water: 0.03 % Max Alkalinity: 0.23 %-1% Nitrates: 0.008 Max. pH of 2 % Solution: 8.5-9.5 Tungsten Trioxide: 69.0 % -70 % Min.
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25 kilograms