... ,%(m/m) ≤0.51Iron content, ppm ≤510Chroma(25%water solution),Co-Pt ≤80100Purity,%(m/m) ≥9995Uses:The usable methods and levels ... widely used in the fields of oil chemistry, water-treatment, synthetic fiber, dyeing, plastic, absorbent coating, paper-making, biomedicine, magnetic material and ...