Description

2,2'-(1,4-Phenylene)Bis[5-(4-Methylphenyl)Oxazole] is a high-purity organic compound belonging to the class of bis-oxazole derivatives. This compound matters as a key fluorescent whitening agent (FWA) and optical brightener, valued for its ability to absorb UV light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of materials. It is primarily needed by manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve the visual appeal of their products.

Application

• Optical Brightening Agent (OBA) for synthetic polymers including polypropylene (PP), polyethylene (PE), and polystyrene (PS).
• Fluorescent Whitening Agent (FWA) in the production of high-quality papers and specialty coatings.
• Additive for detergents and fabric softeners to impart a brighter, cleaner appearance to laundered textiles.
• Brightener for acrylic and polyester fibers during the spinning or finishing processes.
• Component in advanced material research, particularly in the development of organic light-emitting diodes (OLEDs) and sensors.
• Additive in inks and varnishes to achieve enhanced visual effects and whiteness.

Basic Information

Product Name	2,2'-(1,4-Phenylene)Bis[5-(4-Methylphenyl)Oxazole]
CAS No.	7091-75-0
Molecular Formula	C30H22N2O2
Molecular Weight	442.51 g/mol
Synonyms	2,2'-(1,4-Phenylene)bis[5-(4-methylphenyl)-1,3-oxazole]; 2,2'-(p-Phenylene)bis[5-(p-tolyl)oxazole]; OB-1; Fluorescent Brightener OB-1; 4,4'-Bis(5-methyl-2-benzoxazolyl)stilbene (common misnomer); 1,4-Bis(5-methyl-2-benzoxazolyl)benzene; Bisbenzoxazole derivative; Optical Brightener 135
EINECS	Contact for details

Quality Control

Our production of 2,2'-(1,4-Phenylene)Bis[5-(4-Methylphenyl)Oxazole] adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is analyzed for critical parameters including purity, fluorescence intensity, and melting point. Comprehensive Certificates of Analysis (COA) detailing all test results are provided to guarantee the material meets your specific application 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.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Melting Point	357 - 361 °C
Purity (HPLC)	≥ 99.0%
Fluorescence Intensity	≥ 95% of standard
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.