Description

2,2'-(Vinylenedi-p-Phenylene)Bis[5-Ethylbenzoxazole] is a high-performance organic compound belonging to the benzoxazole class of fluorescent whitening agents (FWAs) or optical brighteners. This compound matters for its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of materials. It is critically needed by manufacturers in the polymer, textile, and specialty coatings industries seeking to improve the aesthetic appeal and market value of their products. Our supply ensures consistent quality and reliable performance for your most demanding formulations.

Application

• Polymer and Plastic Additive: Primary application as an optical brightener (OBA) in engineering plastics, synthetic fibers (e.g., polyester, nylon), and films to counteract yellowing and improve whiteness.
• Textile Finishing: Used in the finishing process of synthetic fabrics to achieve brilliant whites and enhance color vibrancy in prints.
• Detergent and Laundry Care Formulations: Incorporated into premium laundry detergents and fabric softeners to impart a "whiter-than-white" appearance to textiles after washing.
• Paper and Pulp Industry: Applied in high-quality paper manufacturing, including photographic paper and specialty boards, to achieve superior brightness and opacity.
• Coatings and Inks: Utilized in varnishes, paints, and printing inks to increase luminosity and visual impact, especially under fluorescent lighting.
• Advanced Material Synthesis: Serves as a key intermediate or functional additive in the research and development of organic light-emitting diodes (OLEDs) and other photonic materials.

Basic Information

Product Name	2,2'-(Vinylenedi-p-Phenylene)Bis[5-Ethylbenzoxazole]
CAS No.	4782-14-3
Molecular Formula	C30H22N2O2
Molecular Weight	442.51 g/mol
Synonyms	Bisbenzoxazole derivative; 2,2'-(1,2-Ethenediyl)bis[5-ethylbenzoxazole]; Optical Brightener 367; Fluorescent Brightener 367; FWA 367; OB-1; 1,4-Bis(5-ethyl-2-benzoxazolyl)benzene (common misnomer); 2,2'-(Ethene-1,2-diyl)bis(5-ethyl-1,3-benzoxazole)
EINECS	Contact for details

Quality Control

Our production of 2,2'-(Vinylenedi-p-Phenylene)Bis[5-Ethylbenzoxazole] adheres to a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed against critical specifications including purity, melting point, and spectral identification. A comprehensive Certificate of Analysis (COA) detailing the results for each parameter is provided with every shipment. We support our global clients with documentation relevant to their regional compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.5%
Melting Point	218 - 222 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Fluorescence Brightness	Standardized against reference

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