Description

2,2'-[1,2-Ethenediylbis[(3-Sulfo-4,1-Phenylene)Imino[6-[(2-Cyanoethyl)Methylamino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(1,4-Benzenedisulfonic Acid)Hexasodium Salt is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene disulfonate class. Its core value proposition lies in its exceptional substantivity and brightening efficiency for cellulosic and polyamide fibers, providing a brilliant blue-white shade under UV light. This product is essential for manufacturers in the textile, paper, and detergent industries seeking to enhance the visual appeal and perceived cleanliness of their products.

Application

• Textile Finishing: Primary application for whitening and brightening cotton, viscose, and other cellulosic fabrics during bleaching or finishing processes.
• Paper Manufacturing: Used in the production of high-brightness writing, printing, and specialty papers to achieve superior whiteness.
• Detergent & Laundry Care: A key optical brightener ingredient in premium laundry detergents and fabric softeners to make white clothes appear brighter and colors more vivid.
• Synthetic Fibers: Effective for brightening polyamide (nylon) fibers, improving the aesthetic quality of textiles and carpets.
• Industrial Coatings & Plastics: Can be utilized in specific coatings and plastic formulations where optical brightening is required.

Basic Information

Item	Detail
Product Name	2,2'-[1,2-Ethenediylbis[(3-Sulfo-4,1-Phenylene)Imino[6-[(2-Cyanoethyl)Methylamino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(1,4-Benzenedisulfonic Acid)Hexasodium Salt
CAS No.	72727-73-2
Molecular Formula	C46H38N12Na6O18S6
Molecular Weight	~1413.2 g/mol (Contact for exact details)
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis[6-[(2-cyanoethyl)methylamino]-1,3,5-triazine-4,2-diylimino]bis(1,4-benzenedisulfonate); Optical Brightener OB-1 (for plastics); 4,4'-Bis[[6-[(2-cyanoethyl)methylamino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid hexasodium salt; 2,2'-(1,2-Ethenediylbis(4,1-phenylene))bis(6-((2-cyanoethyl)(methyl)amino)-1,3,5-triazine-4,2-diylimino)bis(1,4-benzenedisulfonic acid) hexasodium salt
EINECS	Contact for details

Quality Control

Our 2,2'-[1,2-Ethenediylbis[(3-Sulfo-4,1-Phenylene)Imino[6-[(2-Cyanoethyl)Methylamino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(1,4-Benzenedisulfonic Acid)Hexasodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous testing for key parameters including purity, hue, and solubility to ensure consistent performance and compliance with industry standards. A comprehensive Certificate of Analysis (COA) 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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of moisture from the air, which can affect performance.

Specification

Item	Specification
Appearance	Light yellow to yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture (Karl Fischer)	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Freely soluble
Ash Content	Contact for details

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