Description

2,5-Bis(5-tert-Butyl-2-Benzoxazolyl)Thiophene is a high-performance organic compound belonging to the benzoxazole class, widely recognized for its utility 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 whiteness and brightness of materials. This product is essential for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve the aesthetic appeal of their products.

Application

• Optical Brightener for Polymers: Primary application as a highly effective fluorescent whitening agent (FWA) for engineering plastics, polyolefins (PP, PE), and synthetic fibers like polyester and nylon.
• Coatings and Inks: Used to impart a brilliant white appearance and improve visual brightness in paints, lacquers, and printing inks.
• Detergent and Soap Industry: Incorporated into laundry detergents and fabric softeners to compensate for fabric yellowing and achieve a "whiter-than-white" effect on textiles.
• Paper Manufacturing: Applied in high-quality paper production to enhance brightness and opacity, particularly for premium printing and writing papers.
• Advanced Material Research: Serves as a key component in the development of organic light-emitting diodes (OLEDs) and other photonic devices due to its stable fluorescence properties.

Basic Information

Product Name	2,5-Bis(5-tert-Butyl-2-Benzoxazolyl)Thiophene
CAS No.	7128-64-5
Molecular Formula	C26H26N2O2S
Molecular Weight	430.56 g/mol
Synonyms	BBT; 2,2'-(2,5-Thiophenediyl)bis[5-(1,1-dimethylethyl)-2-benzoxazole]; 2,5-Bis(5-tert-butyl-2-benzoxazol-2-yl)thiophene; Fluorescent Brightener 184; FWA 184; OB-1; Thiophene-based optical brightener; 2,5-Bis(benzoxazolyl)thiophene derivative
EINECS	Contact for details

Quality Control

Our 2,5-Bis(5-tert-Butyl-2-Benzoxazolyl)Thiophene 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 industrial and specialty chemical applications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment and is available 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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product efficacy.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to standard
Purity (HPLC)	≥ 98.5%
Melting Point	198 - 202 °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.