Description

2,2'-[(1,4-Phenylene)Bis(Ethene-1,2-Diyl)]Bis(Benzoxazole) is a high-performance organic compound belonging to the bis-benzoxazole class, valued for its excellent photophysical properties. This compound matters as a key optical brightener and fluorescent whitening agent, providing superior stability and brightness across demanding industrial applications. It is primarily needed by manufacturers in the polymer, textile, and specialty chemical industries seeking to enhance the visual appeal and performance of their products.

Application

• Optical Brightening Agent (OBA) for synthetic fibers, plastics, and coatings to impart a brilliant white appearance.
• Fluorescent Whitening Agent (FWA) in laundry detergents and fabric softeners to improve the perceived whiteness and brightness of textiles.
• Polymer Additive for engineering plastics, films, and masterbatches to counteract yellowing and improve aesthetic quality.
• Paper Coating Formulations to achieve high-grade brightness in premium papers and specialty boards.
• Advanced Material Research as a building block or dopant in organic light-emitting diodes (OLEDs) and other photonic devices.
• Security Inks and Dyes leveraging its fluorescence for authentication and anti-counterfeiting features.

Basic Information

Product Name	2,2'-[(1,4-Phenylene)Bis(Ethene-1,2-Diyl)]Bis(Benzoxazole)
CAS No.	5045-43-2
Molecular Formula	C26H16N2O2
Molecular Weight	388.42 g/mol
Synonyms	1,4-Bis(2-benzoxazolyl)ethenylbenzene; 1,4-Bis(benzoxazol-2-yl)styrene; 2,2'-(1,4-Phenylenedivinylene)bisbenzoxazole; BISB; BBOT (common name for optical brightener 184); Fluorescent Brightener 184; OB-1; 4,4'-Bis(2-benzoxazolyl)stilbene; UVITEX OB
EINECS	225-730-9

Quality Control

Our production of 2,2'-[(1,4-Phenylene)Bis(Ethene-1,2-Diyl)]Bis(Benzoxazole) adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. The material is characterized and tested against established industry benchmarks for optical brighteners. Certificates of Analysis (COA) documenting purity, identity, and key performance indicators are available for every shipment upon request.

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 and sources of heat or ignition.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	200 - 205 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Fluorescence Intensity	≥ 95% of reference standard

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