1.purity:98%min 2.Direct manufacturer and good price 3.Excellent&High-Efficiency ... suspending impuritiesChromaticity(in Hazen)(Pt-Co),≤10Acetic acid content,%≥99.0-99.5Moisture,%≤0.15Formic acid content,%≤0.06Aldehyde content, %≤0.03Vaporized ... residue,%≤0.01Iron content (based on Fe), %≤0.00004Reduction time of potassium permanganate, min ...