Description

2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Butylbenzoxazole] is a high-performance organic compound belonging to the benzoxazole class of fluorescent whitening agents (FWAs) or optical brighteners. This compound is valued 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 a critical additive for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to achieve superior visual quality and product appeal in their formulations.

Application

• Plastics and Polymers: Primary use as an optical brightener (OBA) in engineering plastics, PVC, polyolefins (PP, PE), polystyrene, and synthetic fibers to counteract yellowing and improve brightness.
• Synthetic Fibers and Textiles: Applied during the polymerization process or in spin finishes for polyester, nylon, and acrylic fibers to impart a brilliant white appearance.
• Coatings and Inks: Used in high-quality paints, lacquers, and printing inks to enhance whiteness and opacity, especially in white and light-colored formulations.
• Detergents and Laundry Care: Incorporated into laundry detergents and fabric softeners as a fluorescent whitening agent to make white fabrics appear brighter and colors more vivid.
• Paper and Packaging: Employed in the production of high-brightness paper, cardboard, and packaging materials to achieve a clean, white finish.
• Advanced Materials: Investigated for use in organic light-emitting diodes (OLEDs) and other optoelectronic devices due to its fluorescent properties.

Basic Information

Item	Details
Product Name	2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Butylbenzoxazole]
CAS No.	2397-01-5
Molecular Formula	C36H34N2O2
Molecular Weight	526.67 g/mol
Synonyms	Bisbenzoxazole, Vinylenebisbenzoxazole; Optical Brightener OB; FWA OB; 2,2'-(1,2-Ethenediyl)bis[5-(1,1-dimethylethyl)benzoxazole]; 2,2'-(Ethene-1,2-diyl)bis[5-(tert-butyl)benzoxazole]; UVITEX OB; Eastobrite OB-1
EINECS	219-253-6

Quality Control

Our production of 2,2'-(Vinylenedi-p-Phenylene)Bis[5-tert-Butylbenzoxazole] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and performance. A Certificate of Analysis (COA) detailing key specifications is provided with each shipment to guarantee compliance with your technical requirements.

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. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 99.0%
Melting Point	196 - 203 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%

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