Yellow Powder Optical Brightener OB-1

Yellow Powder Optical Brightener OB-1 Description:

The Optical Brightener OB-1 has two appearance colors, green and yellow. The whitening effect is the same except that the shade of 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: Bright yellowish green crystal powder

molecular weight: 414

Molecular formula: C28H18N2O2

Melting point: 350-360℃

Maximum absorption wavelength: 374nm

Maximum emission wavelength: 434nm

Product Application:

Yellow Powder Optical Brightener OB-1 is suitable for many plastics, such as PP, rigid PVC, ABS,PA,PS,PC,PBT,HLPS, EVA and so on.

Package:

10kg/20kg/25kg per fiber drum

450kg/500kg/675kg per pallet

We can also customize the package according to our customers’ requirements.

FAQ

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

At first, the appearance of the optical brightener 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 optical brightener OB-1 between green powder optical brightener OB-1?

Years ago,yellow powder optical brightener OB-1 production capacity is small,so yellow powder optical brightener 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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