Description

Hexasodium 4,4'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-[Bis(2-Hydroxyethyl)Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,3-Disulphonate) is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene class. Its core value lies in its exceptional ability to absorb UV light and re-emit it as visible blue light, thereby enhancing the brightness and perceived whiteness of various substrates. This compound is essential for manufacturers in the detergent, textile, paper, and plastics industries seeking to achieve superior optical brightening effects in their final products.

Application

• Laundry Detergents & Fabric Softeners: Primary application for whitening and brightening cotton, polyester, and blended fabrics during washing.
• Textile Finishing: Applied in the finishing bath for cotton, nylon, and wool to impart a high degree of whiteness and brilliance.
• Paper Manufacturing: Used as a pulp additive or in coating formulations to produce high-brightness writing, printing, and tissue papers.
• Plastics and Synthetic Fibers: Incorporated into polymers like PVC, polyethylene, and polyester fibers to correct yellowness and improve aesthetic appeal.
• Soaps and Personal Care Products: Employed in certain cosmetic and soap formulations to enhance visual purity and brightness.
• Advanced Coatings: Utilized in specialty paints and coatings where optical brightness is a critical performance parameter.

Basic Information

Item	Details
Product Name	Hexasodium 4,4'-[Vinylenebis[(3-Sulfonato-4,1-Phenylene)Imino[6-[Bis(2-Hydroxyethyl)Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,3-Disulfonate)
CAS No.	68072-53-7
Molecular Formula	C₄₆H₃₄N₁₂Na₆O₁₈S₆
Molecular Weight	~1331.1 g/mol
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonate]; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-, hexasodium salt; Optical Brightener OB-1; Stilbene-based Brightener; 4,4'-Bis[(4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid hexasodium salt
EINECS	Contact for details

Quality Control

Our Hexasodium 4,4'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-[Bis(2-Hydroxyethyl)Amino]-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,3-Disulphonate) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent performance, including assay by HPLC, shade evaluation, and solubility tests. Certificates of Analysis (COA) documenting purity, strength, and key physical parameters are available upon request to 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellowish-green powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95.0%
Moisture Content	Max. 5.0%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Freely soluble
Ash Content (Sulfated)	Contact for details
Fluorescence Intensity	Compared to standard

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