Description

2,2'-(1,2-Ethenediyl)Bis[5,7-Dimethylbenzoxazole] is a high-purity organic compound belonging to the bis-benzoxazole class, widely recognized for its exceptional performance as an optical brightener and fluorescent whitening agent. Its core value lies in its ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of materials. This makes it a critical additive for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to achieve superior product aesthetics and quality.

Application

• Optical Brightening Agent (OBA) for Polymers: Primary application as a highly effective whitener for polypropylene (PP), polyethylene (PE), polystyrene (PS), and polyvinyl chloride (PVC) to counteract yellowing and improve visual appeal.
• Synthetic Fiber Processing: Used in the spin-finish and masterbatch for polyester, nylon, and acrylic fibers to impart a brilliant white and bright appearance to textiles and non-wovens.
• Industrial and Automotive Coatings: Incorporated into paints, lacquers, and powder coatings to enhance brightness and opacity, particularly in white and light-colored formulations.
• Detergent and Laundry Care Formulations: Serves as a key fluorescent whitening agent in premium laundry detergents and fabric softeners to make white fabrics appear cleaner and brighter.
• Paper and Pulp Industry: Applied in high-quality paper manufacturing to achieve a higher degree of whiteness in printing and writing papers.
• Advanced Material Research: Utilized in the development of organic light-emitting diodes (OLEDs), sensors, and other photonic devices due to its stable fluorescent properties.

Basic Information

Item	Detail
Product Name	2,2'-(1,2-Ethenediyl)Bis[5,7-Dimethylbenzoxazole]
CAS No.	69847-48-9
Molecular Formula	C22H20N2O2
Molecular Weight	344.41 g/mol
Synonyms	Bisbenzoxazole derivative; 4,4'-Bis(5,7-dimethylbenzoxazol-2-yl)stilbene; Fluorescent Brightener OB-1; OB-1; FBA 367; 2,2'-(1,2-Ethenediyl)bis[5,7-dimethyl-1,3-benzoxazole]; 2,2'-(Ethene-1,2-diyl)bis(5,7-dimethylbenzoxazole); 4,4'-Bis(5,7-dimethyl-2-benzoxazolyl)stilbene
EINECS	Contact for details

Quality Control

Our production of 2,2'-(1,2-Ethenediyl)Bis[5,7-Dimethylbenzoxazole] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high performance. Every lot undergoes rigorous analytical testing, including HPLC for purity, spectrophotometry for fluorescence efficiency, and loss on drying. A comprehensive Certificate of Analysis (COA) detailing all 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 strong oxidizing agents. The product is light-sensitive and should be stored away from direct light exposure to maintain its fluorescent properties.

Specification

Item	Specification
Appearance	Yellowish-green crystalline powder
Identification (IR)	Conforms to standard
Purity (HPLC)	≥ 99.0%
Melting Point	358 - 362 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Fluorescence Intensity	≥ 98% of reference standard

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