Optical brightener agent OB-1 for plastics

CAS NO: 1533-45-5 HPLC: 99%
C.I.: 393 Melting Point: 289-291℃
Fineness: Over 300 Emsh Odor: Free Of Odor

OPtical brightener ob-1.

high whitening Optical Brightener Agent OB-I 393 for film CAS NO 1533-45-5

Product Cate

Optical Brightening Agent For Plastic

Product Name

Optical Brightening Agent OB-1

Chemical Name

2.2’-(4.4’-diphenol vinyl) dibenzoxazol



C.I. No.


Structural Formula  XCEE$~YU`D[11LRJXIM[WMR
Molecular Formula


Molecular Weight


Technical Index

Appearance:yellowish green powder
Melting Point:357~359°C



1. Suitable for polyester fiber, nylon fiber and polypropylene.
2. Suitable for polypropylene plastics, hard PVC, ABS, EVA, polystyrene, polycarbonate etc.


Properties & Features: 
1. High whitening force, strong fluorescence
2. Wide range of application, widely used for the whitening of polyesters, nylon fibre and various plastics.
3. Excellent resistance to high temperature

Our factories and production workshops of Jinan Credit Chemicals

Optical brightener CBS-X.

Fiber customer’s use effect feedback after adding our optical brightener  ob-1 powders

optical brightener ob-1  ,,


Plastic customer’s use effect feedback after adding our optical brightener  ob-1 powders


 Optical brightener ob-1 .

Five star of our service and products quality from our customers

optical brightener cbs-x.

 Exhibition attendance and customer visit photos   

optical brightener ob-1  . .

Our big stock and samples package  for Jinan Credit Chemicals heap and fine industrial chemical optical brightener

optical brightener ob-1,,

25KG cardboard drums are packed in double lined bags and kept away from light in a cool, dry place

optical brightener ob-1  ,

We have more blue or purple powder products to use with brighteners to whiten your products more effectively.

If you are producing chemical fiber or plastic products, have you added other toners, blue powder or purple powder? If not, why not try it, it will make your fibers and plastic (like pvc or pp or pe products) more bright and white with blue luster.

blue powders