Many people in the plastics industry recognize that the price of optical brightener OB originated from the big price increase in 2018. At that time, the price increase of optical brightener OB was terrifying, and the price would rise almost every 2 weeks.

In 2018, the price of optical brightener OB reached up to USD82.00/KG, and optical brightener OB was once a star hot word in the Optical brightener industry.

Starting in 2019, as the supply of intermediate raw materials tends to decrease, and the output gradually increases, the price of optical brightener OB has also fallen to a normal price and and it has stabilized. It becomes the additive with superior performance and reasonable price again. 

When the price of optical brighteners rises, Why is the optical brightener OB the first? This is mainly related to the performance and price of the optical brightener OB.

Product Name:Optical Brightening Agent OB

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

As mentioned above, the fluorescent whitening agent OB is a golden oil for plastic whitening. This mainly means that the fluorescent whitening agent OB has a wide range of applicability and basically any plastic can be used.

Optical brightener OB is an oil-soluble whitening agent, regardless of whiteness value, compatibility and weather resistance are very good, especially suitable for soft plastics, transparent films, etc. Optical brightener OB once became synonymous with plastic brighteners. When many people bought plastic Optical brighteners, they asked directly how much OB cost.

Although the optical brightener OB has so many advantages, we do not recommend all plastic products to use Optical brightener OB, because there will be better choices (lower price and better whiteness) according to the use scene and physical properties of the plastic. .

For example, for rigid PVC plastics, optical brightener OB-1 can be added, and for disposable plastic films, optical brightener FP-127 can be used.

Therefore, when choosing a optical brighteners, pls consult us and choosing the right one is the best.