Yellow Powder Optical Brightener OB-1

Yellow Powder Optical Brightener OB-1 Description:

The Optical Brightener OB-1 has two appearance colors, green powerd and yellow powder. their whitening effect is the same.the difference yellow powder optical brightener OB-1 is a little purple. But for customers who produce color masterbatches, the yellow powder or green powder appearance of the optical brightener OB-1 directly affects the appearance color of the masterbatch

particles, so be careful when choosing.

Product Specification:

Appearance: yellow powder

CI NO.:393

molecular weight: 414

Molecular formula: C28H18N2O2

Melting point: 351℃-360℃

Maximum absorption wavelength: 374nm

Maximum emission wavelength: 434nm

Product Application:

Yellow Powder Optical Brightener OB-1 is suitable for many plastics, such as PP,PE,PET rigid PVC ect.also used in Masterbatches.

Our package as below:

10kg/25kg/drum

675kg/pallet

We can also customize the package according to our customers request.

FAQ

1. Why the optical brightening agent OB-1 has two different appearances, yellow powder and green powder?

First of all, the appearance of the optical brightening OB-1 of the old process was dark yellow. With the continuous improvement of the process, two appearances of yellow and green came out. In fact, the PH value was adjusted during the production process. When the PH value is greater than 7, the appearance is yellow, and when the PH value is less than 7, the appearance is green powder.

2.What is price differences on yellow powder whitening agent OB-1 between green powder whitening agent OB-1?

Years ago,yellow powder flourescent brightening agent OB-1 production capacity is small,so yellow powder flourescent brightening agent OB-1 price is higher.For now,even green powder optical brightener OB-1 still is more popular,but the both price are the same.

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