Jiangsu, China
Business Type:
Trading Company
Business Range:
Agriculture & Food, Chemicals
Management System Certification:
ISO 9001
Main Markets:
North America, South America, Eastern Europe, Southeast Asia, Africa, Mid East, Eastern ...
Import & Export Mode:
Have Own Export License
Sample Available

Optical Brightener Ob-1, CAS No. 1533-45-5, 1533-45-5 manufacturer / supplier in China, offering Optical Brightener OB-1 CAS No. 1533-45-5, High-Efficiency Fungicide-Chlorothalonil 75% WP with CAS No. 1897-45-6, High-Efficiency Fungicide-Difenoconazole 250g/L EC with CAS No. 119446-68-3 and so on.

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Optical Brightener OB-1 CAS No. 1533-45-5

Get Latest Price
Min. Order / Reference FOB Price
1,000 kg US $10-15/ kg
Port: Shanghai, China
Production Capacity: 5000mt/Year
Payment Terms: L/C, T/T, D/P, Paypal, D/A
Color: Yellow
Appearance: Powder
Assay: 99% Min
Melting Point: 355-360ºC
Transport Package: 10/20/25kg/Drum
Specification: OB-1

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Basic Info

Model NO.: OB-1
Trademark: LEPUZ
Origin: China
HS Code: 32042000

Product Description

Product Description

 Product name: Optical brightener OB-1 (greenish or yellowish)

Othter names: Uvitex OB-1; Tinopal OB-1, OBA 393; FBA 393

CAS: 1533-45-5


M.F: C28H18N2O2


1. high whitening strength and strong fluorescence
2.wide application scope: polyester, nylon fiber and various plastics
2.fine high-temperature resistance

Product application

LEPUZ Optical Brightener OB-1 is a excellent diphenylethylene bisbenzoxazole type compound. It is unsoluble in water and has stable capability. And it also has good resistance to heat, sunlight, chlorine bleaching and migration. It owns especially high temperature tolerance, suitable for shaping various kinds of plastics and their products under high temperature. It has an ideal whitening effect on polyester fibers as well as polyester fiber-containing fabrics including polyester-cotton blend fabric. It can be used to whiten various kinds of plastics such as ABS,PS,HIPS,PA,PC,PP,EVA and rigid PVC.With addition of optical agent OB-1, polyamide fiber, nylon and polyester have significantly good whiteness. Mixed with this product, recycling polyester waste material, bottle material and slice flake will have a higher whiteness than before, and recycling materials will have better similar color.

1. for the whitening of polyester fiber, nylon fiber and polypropylene fiber
2. for the whitening of polypropylene plastics, hard PVC, ABS, EVA, polystyrene and Makrolon
3. to be used in polyester and nylon.

The recommended dosages in per 1000Kg raw material are as follows,
1. For EVA, PP fiber, nylon, PC, PVC, etc: 75-200 grams.
2. For polyester fiber: 75-300 grams.


Product quality index





Yellowish green powder



Melting point






Optical Brightener OB-1 CAS No. 1533-45-5



Optical Brightener OB-1 CAS No. 1533-45-5


Packaging & Shipping


Optical Brightener OB-1 CAS No. 1533-45-5

Optical Brightener OB-1 CAS No. 1533-45-5

Main products
Optical brighteners: OB    OB-1   OB-3   KCB    FP-127    KSN    MDAC(SWN)    CBS-X
UV absorbers: UV-531    UV-9(BP-3)    UV-P    UV-326    UV-327    UV-328    UV-329   
                         UV-1130   UV-284(BP-4) 
Light stabilizers: 622    770    944    292    783    695

Our Services

We have exact inventory plans to guarantee stable supply.

We have many years' experience of chemical logistics and dangerous chemical managers with specially trained, which ensure the safety and right of chemicals, timely logistics.

Our laboratory takes strictly testing on every lot of goods according to customers' requirement. Meanwhile we has good relationship with the third party company SGS.

After-sales service is the important part in our service. If there are quality problems, we will actively cooperate with the customers and solve the problems early.

We expect to become good partners with our customers for long.


Company Information

Optical Brightener OB-1 CAS No. 1533-45-5


Optical Brightener OB-1 CAS No. 1533-45-5




Q: Do you have any certificate for quality?

 A: Yes, we have ISO9001:2008 quality system certificate and REACH.


Q: Can you customize products?

A: Yes, we can.


Q: Can you provide samples for quality checking before placing an order?

A: Samples are avaliable upon request, but the shipping cost should be paid by customer.


Q: How to get the price list?

A: Please inqire us by alibaba/email.


Q: What's your payment term?

A: TT/LC/DA/DP/Paypal

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