Description

(E)-2,2'-Vinylenebis[5-Methylbenzoxazole] is a high-purity organic compound belonging to the benzoxazole class of fluorescent brighteners and optical materials. This compound matters for its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, making it a critical performance additive. Industries requiring advanced optical properties, such as polymer manufacturing, specialty coatings, and security printing, rely on its consistent quality and efficacy. Its defined structure ensures predictable performance in demanding applications.

Application

• Optical Brightening Agent (OBA) for polymers, plastics, and synthetic fibers to enhance whiteness and brightness.
• Fluorescent Marker in security inks, anti-counterfeiting applications, and high-value document printing.
• Light-Emitting Material component in the research and development of organic light-emitting diodes (OLEDs) and other optoelectronic devices.
• Polymer Additive to improve the visual appeal and perceived quality of engineering plastics and coatings under various lighting conditions.
• Analytical Chemistry as a fluorescent probe or tracer in specific detection and assay methodologies.
• Specialty Coatings formulation for papers, textiles, and decorative surfaces requiring a brightening effect.

Basic Information

Product Name	(E)-2,2'-Vinylenebis[5-Methylbenzoxazole]
CAS No.	17233-65-7
Molecular Formula	C₁₈H₁₄N₂O₂
Molecular Weight	290.32 g/mol
Synonyms	2,2'-(1,2-Ethenediyl)bis[5-methylbenzoxazole]; 2,2'-(E)-Ethene-1,2-diylbis(5-methyl-1,3-benzoxazole); Fluorescent Brightener OB-1; OB-1; 5-Methyl-2-styrylbenzoxazole dimer; UVITEX OB; Benzenepropanenitrile, α,α'-(1,2-ethenediyl)bis[; (E)-1,2-Bis(5-methyl-2-benzoxazolyl)ethene
EINECS	Contact for details

Quality Control

Our (E)-2,2'-Vinylenebis[5-Methylbenzoxazole] is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for optical and electronic applications. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and performance data is 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 incompatible materials. Due to its light-sensitive nature, minimize exposure during handling and transfer.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	196 - 202 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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