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Fluorescent Optical Brightener For PVC / PP / PE , CAS No. 7128 - 64 – 5

Fluorescent Optical Brightener For PVC / PP / PE , CAS No. 7128 - 64 – 5

Model Number : CAS No. 7128 - 64 - 5
Place of Origin : China
MOQ : Negotiable
Price : Negotiable
Payment Terms : Negotiable
Supply Ability : 1000mt / year
Delivery Time : Prompt
Packaging Details : 25KG drum
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Fluorescent Optical Brightener For PVC / PP / PE , CAS No. 7128 - 64 – 5

Quick Detail:

Fluorescent Whitening Agent OB is a disulfonic distyrylbiphenyl biphenyl compound, which is the most excellent brightener used in detergent industry. It can soluble in water easily and has better whitener effect on cellulose fiber, polyamide and proteinic fiber at room temperature. It has high brighten intensity on cotton cloth as much 2.7 times diphenylethylene tristriazine derivatives, and has well optical blue color moniter, dissolve and disperse properties. It has extremely high stability with hypochloride sodium, it is a bleaching resistent optical brightener.


Name: Fluorescent Whitening Agent OB
CAS No.: 7128-64-5

Chemical name: 2,2’-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-benzoxazol


Fluorescent Whitening Agent OB is used in PVC, PE, PP, PS, ABS, paint, ink , coating, not for used in 270°C or more. Used for detergent, cotton, linen, silk, polyamide fiber, wool and paper.

High whitening strength, excellent fastness, to chlorine/oxygen bleaching, washing, and dry/wet light fastness, level dyeing properties. Even in low temperature, the product has a high solubility in water, especially suitable for liquid detergent.

Used as an additive for the whitening of synthetic detergents, scented soaps, soaps,for cotton, linen, silk, wool, poly amide fibers and papers etc.


AppearanceYellow powder
Assay99% min
Melting Point201-205℃
Volatile0.5% max
Transmittance450nm 97%min
500nm 98%min

Competitive Advantage:

Hongkun is one of the biggest manufacturers of UV Absorber in China with the same quality of BASF, and the application effect has been proved by many customers.

Product Tags:

optical brightener agent


fluorescent whitening agent

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