Iron sensitivity test: qualified

Clarity test: qualified

Water insoluble: 0.005%max

Residue on ignition (as sulfate): 0.02%max

Chloride (as Cl ): 0.002%max

Sulfate (as SO₄^2-): 0.1%max

Iron (Fe): 0.0001% max

Heavy metal (Pb): 0.0005% max

Salicylic acid (HOC6H4COOH): 0.02% max