Optical Brightener CBS-351

                                                                                                                                                         PRINA  CBS-351

l       Chemical name:     4,4-bis(2-disulfonic acid styryl)biphenyl

_l          Molecular formula:  C₂₈H₁₈O₆S₂Na₂

l       Molecular weight:   562

       Technical conditions:

Appearance:  yellow solid granular or powder

Color light:  slight-colored blue fluorescent light

(approximate to the standard sample)

Solid content （Assay in HPLC）:       98.5%  minimum.

Fineness:           through 100 meshes.

E1/1:   1143±38

Solubility(in water): At 25℃, 25g/l;
                                             At 70℃,100g/l;
                                             At 95℃,300g/l
                                          Insoluble materials (in water): 0.5% Max
                                          Moisture: 0.5% Max
                                          Particle size : 95% through 100mesh sieves
                                         In ultra-violet range: 348-350nm
      Application: Mainly used in detergent ,synthetic washing powder,
soap as excellent brightener, it’s also widely used in cellulose fiber,
azelon (proteinic fiber) and polyamide fiber as an excellent brightener
at room temperature. The effects of being brightened cotton by this
consistency products are 2.7 times as big as fluorescent brightener of
diphenyle-thene double triazine.
        Packing: packed in 25kg paper board bucket. It also can be packed in
big or small bucket according to the requirement of the customers.