型号规格:VBL用途:造纸荧光增白剂有效物质 :98（％）规格尺寸:25KG（mm）保质期:12（个月）执行标准:NATIONAL CODE主要成分:Stilbene derivativeStilbene derivative主要作用:Whitening agent for cellulose base fiber and cotton fabric.CAS:12224-06-5Optical Brightening Agent VBLMain Chemical Composition:Stilbene derivativeSpecification:Appearance: Slight yellow powderFluorescent Color: Similar to the standard sampleWhitening strength:100 3( compared with standard sample)Moisture: 5%Fineness( 80 mesh residue): 5%C. I. Number: 85Property:1. With bluish violet color2. Soluble in soft water as much as 80 times weight, 300 ppm in hard water3.Anionic type, alkali endurable, can be used in one bath of anionic andnonionic surfactant.4.To be unendurable ion of copper and iron, etc. Unsuitable to be used incationic dyestuff and surfactant.Application:1. Whitening agent for cellulose base fiber and cotton fabric.2. Whitening agent for white pattern in discharge printing of cotton fabric.3. Brightening agent for light colored cellulose base fiber.Process:1.exhausting whitening process:VBL: 0.05-0.3% (o.w.f.), bath ratio: 1:5-30, dyeing temperature: 40℃-100℃；Na2SO4:0-10g/l.,start temperature :30℃, heating rate:1-2℃/min, keep thetemperature at 50-100℃for 20-40min, then lower to 50-30℃ wash dry( 100℃) setting (120℃-150℃) 1-2 min( add proper amountleveling agent according to the leveling effect).2. Padding Process:VBL:0.5-3g/l, residue liquor ratio:100%, one dip and nip dry( 100℃) setting (120℃-150℃) 1-2 minThe information of our products is for reference only. We are not responsible for any unexpected results or patent dispute caused by it.