型号规格:4BK有效物质 :98（％）规格尺寸:25kg（mm）保质期:12（个月）主要成分:Stilbene bistriazine derivative主要作用:Mainly be used in whitening of cotton fabric and polyester /cotton blends. T/C wOptical Brightening Agent 4BKMain Chemical Composition:Stilbene bistriazine derivativeSpecification:Appearance: Slight yellow uniform powderFluorescent Color: Slight bluishWater: 5%Fineness( 120 mesh residue): 5%Property:1)With strong fluorescence, excellent whitening performance and slight bluish shade2) With high light stability and chemical stability.3) Good acid stability, stable in perborate and hydrogen peroxide.Application:Mainly be used in whitening of cotton fabric and polyester /cotton blends. T/C whitening in one bath.Treating Process:Exhaust process:0.1-0.8% (o.w.f.),bath ratio: 1:10-30Temperature90--100℃ 30-40min wash dry.The processing can be adjusted according to the actual situation.One bath process of Scouring hydrogen peroxide bleaching and whitening:Dosage: 0.2 0.8%( o.w.f.)hydrogen peroxide:5-15/LStabilizer:1 5g/LNaOH: 2 4g/LScouring agent: 0.5 1g/Lbath ratio: 1:10-30Temperature90--100℃ 30-40min wash dry.The processing can be adjusted according to the actual situation.Packing:25kg per cardboard drum