Optical brightener OB-1(C.I. 393)

CAS No.

1533-45-5

EINECS No.

216-245-3

Other Name

2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole

MF

C28H18N2O2

Appearance

Bright yellow / green crystalline powder

Purity

≥99%

Melting point

357-359 °C

Volatile:

<0.5%

Package

20kg per carton, 25/30kg per fiber drum with PE liner, or as per the customers' requirements.

Applications:

Mostly used in the brightening the products of synthetic fiber and plastics, it is widely used in plastic film, material of lamination moulding and injection moulding as well as preferable brightening efficiency on ABS,PS,HIPS,PA,PC,PP,hard PVC,polyolefin, PVC foaming, TPR, EVA and PU foaming together with coating, natural lacquer, etc. It also has specially good effect on foaming plastics, especially EVA, PE foaming.

Properties: 

•     Colors appear more brilliant

•     Environmentally friendly

•     Excellent brightening ability

•     Produce a bluish tinge, masking yellowness

•     Whiter-than-white appearance.

Dosage:

Optical brightener OB-1 is commonly used in the amount of 0.01-0.03%, that is, 

each 100kg of the materials, the optical brightener OB-1 takes 10g-30g or can be adjusted according to the requirements of the product or test.