... 99.0% 2.Prompt and safely shipment 3.Factory visit and sample 4.BV or SGS inspection 5.Desizing agent Properties:Sodium persulfate ... , %99.0Free acid, %≤0.01Cl,%≤0.0001Heavy metals (Pb),%≤0.0005Fe,%≤0.0005Mn,%≤0.00005Moisture,%≤0.05Active oxygen,%≥6.65Application:Sodium persulfate is ... a bleaching and slightly corroding effect. factory directly 9.0 sodium persulfate