Description

2,2'-(1,2-Ethenediyl)bis[5-[[4-[(2-hydroxyethyl)amino]-6-[[4-[[(2-hydroxyethyl)amino]carbonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino] benzenesulfonic acid disodium salt is a high-purity, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene class. It matters for its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of materials. This compound is essential for manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior optical brightening effects in their products.

Application

• Textile Finishing: Primary application for whitening and brightening cotton, nylon, polyester, and blended fabrics during manufacturing or laundering.
• Paper Manufacturing: Used in high-quality writing, printing, and specialty papers to achieve a brilliant white appearance and improve print contrast.
• Detergent & Laundry Care: A key ingredient in premium laundry detergents, fabric softeners, and soaps to compensate for fabric yellowing and maintain garment brightness.
• Plastics & Polymers: Incorporated into synthetic fibers (e.g., for carpets), films, and molded plastic articles to correct inherent yellowness and improve visual appeal.
• Cosmetics & Personal Care: Employed in formulations where a brightening or whitening effect is desired, subject to regional regulatory approval.
• Advanced Coatings: Used in paints, varnishes, and other coating systems to enhance whiteness and opacity.

Basic Information

Product Name	2,2'-(1,2-Ethenediyl)bis[5-[[4-[(2-hydroxyethyl)amino]-6-[[4-[[(2-hydroxyethyl)amino]carbonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino] benzenesulfonic acid disodium salt
CAS No.	92466-51-8
Molecular Formula	C40H38N12Na2O12S2
Molecular Weight	996.90 g/mol
Synonyms	Fluorescent Brightener 220 (FB 220); Disodium 4,4'-bis[[4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; Tinopal CBS-X; Blankophor BSU; Optiblanc SPL 10; Stilbene triazine fluorescent whitening agent; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt (related structure)
EINECS	Contact for details

Quality Control

Our 2,2'-(1,2-Ethenediyl)bis[5-[[4-[(2-hydroxyethyl)amino]-6-[[4-[[(2-hydroxyethyl)amino]carbonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino] benzenesulfonic acid disodium salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with industry specifications. A detailed Certificate of Analysis (COA) documenting key parameters such as assay, absorbance, and hue 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). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellowish to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Absorbance (348 nm)	Within specified range
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Freely soluble

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