SpecificationA. Appearance: Weak orange to brown thin liquid, good fluidityB. Color: Thin solution with pupple blue fluorescenceC. Density (25℃):≤1.05g/cm3D. Viscosity (25℃):≤150mPa.sE. pH: (1% aqueous) 8-11.5

Property:A. BBU is a compound of pm’e product and synergist, it is a tetrasulpbo type FWA, its stlucture is same kind as die produced by the Ciba company ofSwiss.B. Dissolving property: random concentration with water.C. lconicity: anion.D. Stability under low temperature: effect remains after nlelting the solidification appeared if it is stored under freezing point for a long time.E. Fastness: With stand sunlight, acid, alkali.

Application:The product is a substitute for VBL brightener used in the product line inlarge-scale paper making factory ,which can withstand becoming yellow ofpaper products and is better than the same kind of products existing in market in brighten efficiency and standing against disadvantage interthre, especially in the modenn large scale paper making line. It receives good praise form the consumer.

Process:A. Paper: 0.05 - 0.35% (To dry pulp), may be used in pulp directly.B. Surface sizing: 0.01-0.15%, mixed with glue solution uniformly.C. Coating: 0.05 - 1% (decided by brightness), mixed with pulp uniformly.

Package & Storage:Packing in plastic drum each container 25KG/200KG, or according to tbe required of consumer.Keeping in a cool, dry place and avoiding sunlight, not allowed to meet with cation compound (such as: aluminmn sulfate, cat ion resin, etc).Validity: 6 months.