Description

4,4'-Bis(2,5-Dimethylstyryl)Biphenyl is a high-purity organic compound belonging to the stilbene derivative class, valued for its excellent optical properties. This compound is a critical functional material, primarily serving as an optical brightener and fluorescent whitening agent. It is essential for manufacturers in the plastics, synthetic fibers, coatings, and specialty chemical industries seeking to enhance the brightness and whiteness of their products.

Application

• Optical Brightening Agent (OBA) for plastics, including polypropylene (PP), polyethylene (PE), and polystyrene (PS).
• Fluorescent Whitening Agent (FWA) in the production of synthetic fibers such as polyester and nylon.
• Key additive in coatings, paints, and inks to improve visual appeal and perceived cleanliness.
• Functional intermediate in the synthesis of advanced organic light-emitting diodes (OLEDs) and other photonic materials.
• Paper whitening agent for high-grade specialty papers.
• Detergent formulation component to enhance the brightness of laundered fabrics.

Basic Information

Product Name	4,4'-Bis(2,5-Dimethylstyryl)Biphenyl
CAS No.	72814-85-8
Molecular Formula	C30H28
Molecular Weight	388.55 g/mol
Synonyms	4,4'-Bis(2,5-dimethylstyryl)biphenyl; 2,2'-(1,1'-Biphenyl-4,4'-diyl)bis(1-(2,5-dimethylphenyl)ethene); 4,4'-Bis(2,5-dimethylstyryl)-1,1'-biphenyl; BIS-MSB (common abbreviation); Fluorescent Brightener 393; Optical Brightener OB-3; Stilbene-based brightener; 1,1'-Biphenyl, 4,4'-bis(2,5-dimethylstyryl)-
EINECS	Contact for details

Quality Control

Our 4,4'-Bis(2,5-Dimethylstyryl)Biphenyl is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for industrial and specialty applications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and impurity profiles is available for every shipment.

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 integrity.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	285 - 295 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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