Description

2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Octylbenzoxazole] is a high-performance organic compound belonging to the benzoxazole class of fluorescent brightening agents. Its core value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the whiteness and brightness of various materials. This product is essential for manufacturers in the plastics, synthetic fibers, coatings, and specialty chemical industries seeking to improve the visual appeal and perceived quality of their finished products. The compound, identified by CAS NO 4782-17-6, offers excellent thermal stability and compatibility with a wide range of polymer matrices.

Application

• Plastics and Polymers: As a highly effective optical brightener (OBA) or fluorescent whitening agent (FWA) for engineering plastics, PVC, polyolefins (PP, PE), and polystyrene to counteract yellowing and improve brightness.
• Synthetic Fibers: For the mass coloration and brightening of polyester, nylon, and acrylic fibers during melt spinning or in spin finishes.
• Coatings and Inks: Incorporated into clear coatings, lacquers, and printing inks to achieve a brilliant white base or to enhance the luminosity of light-colored formulations.
• Detergents and Laundry Care: Used in premium laundry detergents and fabric softeners to impart a "whiter-than-white" appearance to textiles.
• Paper and Packaging: Application in high-quality papers, paper coatings, and packaging materials to achieve superior brightness and opacity.
• Advanced Materials: Potential use in light-converting layers for agricultural films, security printing, and specialty optical applications.

Basic Information

Product Name	2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Octylbenzoxazole]
CAS No.	4782-17-6
Molecular Formula	C48H56N2O2
Molecular Weight	692.98 g/mol
Synonyms	Bisbenzoxazole derivative; UVITEX OB; Fluorescent Brightener OB; 2,2'-(1,2-Ethenediyl)bis[5-(1,1,3,3-tetramethylbutyl)benzoxazole]; 2,2'-(Vinylenedi-p-phenylene)bis[5-(1,1,3,3-tetramethylbutyl)benzoxazole]; Optical Brightener OB; FWA OB; Benzenepropanoic acid, 3,3'-[(1,2-ethenediyl)bis(4,1-phenyleneoxy)]bis[2,2-dimethyl-
EINECS	Contact for details

Quality Control

Our production of 2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Octylbenzoxazole] adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. Key parameters such as identity, assay, melting point, and spectral properties are verified. Certificates of Analysis (COA) documenting all test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product efficacy.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Melting Point	196 - 203 °C
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 0.5 %
Absorbance (in solution)	Conforms
Fluorescence Brightness	Conforms to standard

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.