Description

Benzenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl) amino]-6-methoxy-1,3,5-triazin-2-yl]amino]-2-[2- [4-[[4-methoxy-6-[(2-sulfoethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]- is a high-performance, water-soluble fluorescent brightening agent (FBA) belonging to the triazinylaminostilbene class. Its core value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the whiteness and brightness of treated materials. This compound is primarily needed by manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior optical brightening effects.

Application

• Textile Finishing: As a key optical brightener for synthetic fibers like polyester, nylon, and acetate, as well as for cotton and blended fabrics.
• Detergent & Laundry Care: Formulation into laundry detergents, fabric softeners, and soaps to impart a "whiter-than-white" appearance to laundered textiles.
• Paper Manufacturing: Brightening of high-quality writing, printing, and tissue papers to improve perceived whiteness and print contrast.
• Plastics and Polymers: Incorporation into polymers, synthetic fibers during spinning, and coatings to counteract yellowing and enhance visual appeal.
• Advanced Material Coatings: Potential use in specialty coatings where fluorescence and brightness are required properties.

Basic Information

Product Name	Benzenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl) amino]-6-methoxy-1,3,5-triazin-2-yl]amino]-2-[2- [4-[[4-methoxy-6-[(2-sulfoethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]-
CAS No.	70024-48-5
Molecular Formula	C34H38N12O13S3
Molecular Weight	918.94 g/mol
Synonyms	Fluorescent Brightener 220 (FB 220); Tinopal CBS-X; 4,4'-Bis[[4-[bis(2-hydroxyethyl)amino]-6-methoxy-1,3,5-triazin-2-yl]amino]-2,2'-stilbenedisulfonic acid; Stilbene triazine brightener; Optical Brightening Agent OB-1; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-methoxy-1,3,5-triazin-2-yl]amino]benzenesulfonic acid]; Distyrylbiphenyl derivative brightener (class).
EINECS	Contact for details

Quality Control

Our production of this fluorescent brightener adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical methods including HPLC for assay and impurity profiling, UV-Vis spectroscopy for strength, and assessment of application performance. A Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with each 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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellowish to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Fluorescence Intensity	≥ 95% of reference standard
Solubility in Water	Freely soluble

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