Description

Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(2-cyanoethyl)[2-(2-hydroxyethoxy)ethyl]amino]-1,3,5-triazine-4,2-diyl]imino]]bis[benzene-1,4-disulphonate] is a high-purity, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene disulfonate class. Its primary value lies in its exceptional ability to absorb UV light and re-emit it as visible blue light, thereby compensating for yellowing and 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 finished products.

Application

• Textile Finishing: As a critical optical brightener for cotton, nylon, wool, and synthetic fibers during washing or finishing processes.
• Laundry Detergent Formulation: A key additive in premium powder and liquid detergents to make white fabrics appear brighter and colors more vivid after washing.
• Paper Manufacturing: Used in coating and sizing formulations to achieve high-grade brightness in printing, writing, and specialty papers.
• Plastics and Polymers: Incorporated into polymers like PVC, polyethylene, and polyamide to improve whiteness and counteract inherent yellowness.
• Soap and Personal Care Products: Enhances the visual appeal of bar soaps, liquid soaps, and cosmetic formulations.
• Synthetic Fiber Production: Applied during the spinning or extrusion process of man-made fibers to impart permanent brightness.

Basic Information

Item	Details
Product Name	Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(2-cyanoethyl)[2-(2-hydroxyethoxy)ethyl]amino]-1,3,5-triazine-4,2-diyl]imino]]bis[benzene-1,4-disulphonate]
CAS No.	79135-87-8
Molecular Formula	C52H48N12Na6O22S6
Molecular Weight	Approx. 1551.2 g/mol
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 4,4'-bis[[4-[bis(2-cyanoethyl)amino]-6-[2-(2-hydroxyethoxy)ethyl]amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; Stilbene triazine brightener; Optical Brightening Agent OBA 220; 4,4'-Bis[(4,6-dianilino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid hexasodium salt (related derivative).
EINECS	Contact for details

Quality Control

Our production of Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(2-cyanoethyl)[2-(2-hydroxyethoxy)ethyl]amino]-1,3,5-triazine-4,2-diyl]imino]]bis[benzene-1,4-disulphonate] adheres to a stringent quality management system. Every batch is subjected to comprehensive analytical testing, including HPLC for purity and assay, spectrophotometry for strength and shade, and checks for key impurities. Certificates of Analysis (COA) documenting all critical parameters are provided to ensure traceability and compliance with your specifications and industry standards.

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 material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Yellowish to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95.0%
Moisture Content	Max. 5.0%
pH (1% Solution)	7.0 - 9.0
Ash Content (Sulfated)	Contact for details
Fluorescent Strength	Standardized vs. reference
Shade	Neutral to bluish white

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