Description

Hexasodium 2,2'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-[[3-(Acetylamino)Propyl]Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,4-Disulphonate) is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazine-stilbene chemical class. Its core value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby compensating for yellowing and significantly enhancing the perceived whiteness and brightness of treated materials. This compound is essential for manufacturers seeking to achieve superior optical brightening effects in demanding applications. Industries requiring premium-grade whitening for textiles, papers, and polymers are the primary users of this advanced chemical.

Application

• Textile Whitening: Used as a high-efficiency optical brightener for synthetic fibers like polyamide (nylon) and polyester, as well as for cotton and wool blends in detergents and fabric finishing.
• Paper and Pulp Industry: Applied in the coating and sizing of high-quality papers, including writing, printing, and art papers, to achieve a brilliant white appearance.
• Polymer and Plastics: Incorporated into thermoplastics, synthetic fibers at the extrusion stage, and coatings to improve whiteness and counteract inherent yellowness.
• Detergent and Soap Formulation: Serves as a key additive in laundry detergents, fabric softeners, and soaps to impart a "whiter-than-white" look to laundered fabrics.
• Advanced Material Coatings: Utilized in specialty paints, varnishes, and other coating systems where optical brightness is a critical performance parameter.

Basic Information

Product Name	Hexasodium 2,2'-[Vinylenebis[(3-Sulfonato-4,1-Phenylene)Imino[6-[[3-(Acetylamino)Propyl]Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,4-Disulphonate)
CAS No.	56190-26-2
Molecular Formula	C46H36N12Na6O18S6
Molecular Weight	~1371.1 g/mol
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 4,4'-bis[[4-[6-[3-(acetylamino)propylamino]-1,3,5-triazin-2-yl]amino]-2-sulfonatostyryl]biphenyl-2,2'-disulfonate; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[6-[[3-(acetylamino)propyl]amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]]-4,4'-disulfonic acid hexasodium salt; Optical Brightener OB-1 (specific grade); 4,4'-Bis(2-sulfostyryl)biphenyl derivative; CI Fluorescent Brightener 220
EINECS	Contact for details

Quality Control

Our Hexasodium 2,2'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-[[3-(Acetylamino)Propyl]Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,4-Disulphonate) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. Key parameters such as active content, hue, and solubility are meticulously controlled. Certificates of Analysis (COA) documenting these results are provided with each shipment to guarantee traceability and support your quality assurance protocols.

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 incompatible materials and direct heat sources. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellowish to off-white powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Freely soluble
Ash Content (Sulfated)	Contact for details

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