Optical Brightening Agent ER(C.I.199)

{Main Chemical Composition}
      Stilbene bistriazine derivative.

{Specifications}                       

Item	Indices
Appearance	yellowish-green powdered crystal
Purity	≥99%
Melting point	229-231

{Properties}:                       
    Fluorescent Whitening Agent ER, also called whitening agent for polyestr, is one of the bisdiphenylethelene compounds and similar to Blankophor ER made in Bayer A.G., Germany. ER has an appearance of yellowish green powdered cry stal with a purity equal to or higher than 99% and a melting point of 229 to 231. It is non-toxic, odorrless, nonionic and soluble in most of organic solvents. Products whitened by ER have a natureal pure white appearance. Being stable in chemical properties and characterized by strong hightemperature resistance and photostability, ER is one of the most ideal shitening agents generally accepted internationally for polyester fiber.

{Applications}:                  
    Opticad Brightening Agent ER in the form of refined powder is very suitable for whitening and brightening polyester fiber and has good whitening effect on plastics such as PE,PP and PVC and their products. Products can be remarkably upgraded by adding ER refined powder in the process of shaping with polyester chips or recovered polyester chips. In addition, the refined powder is widely used in coating industry.

{Packing and storing}:           
     Packaged in cardboard barrals, 20kg or 25kg each. Stored in cool and ventilated place.