FLUORESCENT BRIGHTENER VBL for paper and textiles

Description

FLUORESCENT BRIGHTENER VBL ******5 CASï&frac*4;š*********7 STRUCTURE: MOLECULAR FORMULA: C*6H*4N*2O8S2Na2 MOLECULAR WEIGHT: **2.*4 (As International Relative Atom Mass ***7) Max UV ABSORPTION WAVELENRHTH: **8 nm EXCUTIVE STANDARD: GB/T*********4 SPECIFICATIONS: Item Indices Used for textiles Used for paper-making Appearance Light yellow or yellow uniform powder Fluorescent strenghth (equivalent to the Sstandard sample) **0 Color Shade Similar to the standard sample Whiteness (the deviation with the Standard Sample) — ≥ *3 Moisture content ≤ 5.0% Content of Water-Insoluble Impurities ≤ 0.5% Fineness (residual content passed through **0Î&frac*4;m-pore sieve ) ≤ *0.0% The limitation of *3 kinds of harmful aromatic amines, mg/kg According with the standard GB *********4 PROPERTIES: Fluorescent Brightener VBL is a typical representative of bis(triazinylamino)stilbene ***** can be soluble in *0 times soft water and shows anion character and the pH value resistant to acid and alkali is ***1 and the expected pH value of dyeing bath is **9. When used in acidic solution, the fluorescence will weaken owing to the increase of acid and turns into yellow color. It can resist **0ppm hard water, 0.*5% free chlorine, but don&#**9;t resist the ion of copper and iron. It show stability to rongalite, but cannot be baked at high temperature. It has bluish voilet optical color and can be used in the one.bath with anionic surfactant or dyestuff and nonionic surfactant and oxydol, unsuitable for application in cationic dyestuff and surfactant and raw synthetic resin. APPLICATIONS: Fluorescent whitening agent for cotton fabric and gluing products, light color or printing products. It show normal sun light resistance and has good affinity with cellulose fiber, normal level dyeing result. can be used in printing pulps and exhausting or padding dyeing.