Fluorescent whitening agent OB 184

Fluorescent whitening agent OB 184

With the continuous advancement of the current level of technology, the application fields of fluorescent whitening agent OB 184 CAS NO.:7128-64-5 have gradually expanded. In the paint industry, paint manufacturers often add the fluorescent whitening agent OB 184 CAS NO.:7128-64-5, which is a kind of brightener. Why the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is suitable for paint use? We will give you a detailed explanation today.

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Product Description



Fluorescent whitening agent OB 184 CAS NO.:7128-64-5 used for ink


With the continuous advancement of the current level of technology, the application fields of fluorescent whitening agent OB 184 CAS NO.:7128-64-5 have gradually expanded. In the paint industry, paint manufacturers often add the fluorescent whitening agent OB 184 CAS NO.:7128-64-5, which is a kind of brightener. Why the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is suitable for paint use? We will give you a detailed explanation today.

Performance characteristics of fluorescent whitening agent OB 184 CAS NO.:7128-64-5

fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is one of the most widely used plastics manufacturers. Due to its special properties, it not only has a good whitening effect in plastics, but also has significant whitening and brightening effects in chemical fibers, paint,inks, coating  etc.

The appearance of the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is a light yellow powder with a melting point of 196-203°C and a decomposition temperature of greater than 220°C. It is insoluble in water and soluble in a variety of organic solvents. The maximum absorption wavelength of the spectrum is 374nm, and the maximum fluorescence emission wavelength is 434nm.

fluorescent whitening agent OB 184 CAS NO.:7128-64-5 should meet the paint requirements.

Paint is made of mineral pigments, drying oils, resins, etc., so it requires that the fluorescent whitening agent used in the paint has good compatibility with it, it should be insoluble in water, and has certain acid and alkali resistance. It has good weather fastness, etc., and the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 can just meet these requirements of the paint. The paint which add the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 has a whiter appearance and a more vivid color appearance.

How to add fluorescent whitening agent OB 184 CAS NO.:7128-64-5 in paint?

The fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is usually added in the form of a powder product in the grinding process of the paint production process, and then ground together with the paint etc., after fully grinding until the particle diameter is less than 20um, and the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 is evenly dispersed in the paint.

Generally, if 150g-200g is added to one ton of material, the appearance and quality of the product will be improved a lot, and there will be no yellowing and fading in the later stage.

There are many types of fluorescent brighteners, and each brightener has its own unique performance characteristics, so when choosing a brightener, you must find a professional manufacturer.

The following is the fluorescent whitening agent OB 184 CAS NO.:7128-64-5 data sheet

Fluorescent whitening agent  production introduction:

Chemical Name:2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene

CAS No.:7128-64-5

C.I. No.    :184    

Molecular Formula:C26H26N2O2N2

Molecular Weight:430

Appearance:slight greenish yellow powder

Melting Point:200-202°C

Purity:≥99%

Uses:Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, coating, paint & ink etc.

Packing :25 kg per fiber drum

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