Description

Fluorescent Brightener 367 is a high-performance stilbene derivative optical brightening agent (OBA) designed to impart a brilliant white appearance to various substrates. Its core value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, effectively compensating for yellowish tints and enhancing perceived whiteness and brightness. This product is essential for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve the aesthetic appeal and marketability of their finished products.

Application

• Plastics and Polymers: Widely used for whitening and brightening PVC, polyolefins (PP, PE), ABS, and engineering plastics for applications in household goods, packaging, and automotive parts.
• Synthetic Fibers: Effective brightener for polyester (PET), nylon, and acetate fibers during melt spinning or in finishing baths to produce brilliantly white textiles.
• Coatings and Paints: Incorporated into industrial and decorative coatings, lacquers, and printing inks to achieve a clean, bright white finish or to tone other colors.
• Detergent and Soap: Used as a laundry brightener in powder and liquid detergents and soaps to make white fabrics appear whiter and colors more vibrant.
• Paper and Pulp: Applied in the coating or sizing of high-quality papers, art papers, and board to achieve high degrees of whiteness and opacity.
• Photographic Industry: Utilized in certain photographic papers and films to enhance brightness and image quality.

Basic Information

Item	Details
Product Name	Fluorescent Brightener 367
CAS No.	5089-22-5
Molecular Formula	C40H38N12O8S2Na2
Molecular Weight	924.90 g/mol
Synonyms	Tinopal CBS-X; Blankophor ER; Fluorescent Brightener CBS-X; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonic acid disodium salt; 4,4'-Bis[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid disodium salt; FBA 367; Optical Brightener 367; Stilbene Brightener 367
EINECS	225-794-5

Quality Control

Our Fluorescent Brightener 367 is manufactured under a strict quality management system. Each batch undergoes rigorous testing, including spectrophotometric analysis for strength and shade, to ensure consistent performance and compliance with industry specifications. Comprehensive Certificates of Analysis (COA) detailing purity, absorbance, and other critical parameters are 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellowish-green powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Strength (UV-Vis)	100 ± 3% (vs. Standard)
Shade	Bluish white
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
Solubility in Water	Clear, yellowish solution

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