Description

Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(3-amino-3-oxopropyl)(phenylmethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate) is a high-purity, multi-sulfonated fluorescent whitening agent (FWA) belonging to the triazine-stilbene chemical class. This compound is engineered to deliver exceptional optical brightening performance by absorbing ultraviolet light and re-emitting it as visible blue light, thereby enhancing the perceived whiteness and brightness of treated materials. It is a critical specialty chemical for manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior product aesthetics and market competitiveness.

Application

• Textile Finishing: Primary application for whitening and brightening natural and synthetic fibers like cotton, polyester, and polyamide during manufacturing or finishing processes.
• Laundry Detergents & Fabric Softeners: Key additive in household and industrial detergent formulations to impart a "whiter-than-white" appearance to laundered fabrics.
• Paper Manufacturing: Used in the production of high-quality writing, printing, and specialty papers to achieve high brightness levels and mask natural yellowness.
• Plastics and Polymers: Incorporated into polymers, synthetic fibers (like spandex), and masterbatches to correct yellowness and improve the visual appeal of final plastic products.
• Soaps and Personal Care: Employed in the formulation of bar soaps, liquid soaps, and cosmetic products to enhance their visual purity and brightness.
• Advanced Coatings: Utilized in specific coating formulations where optical brightening is required for aesthetic or functional purposes.

Basic Information

Item	Details
Product Name	Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(3-amino-3-oxopropyl)(phenylmethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate)
CAS No.	68134-04-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 4,4'-bis[[4-anilino-6-[N-(2-benzoylethyl)-N-methylamino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; Stilbene triazine fluorescent whitening agent; Optical Brightener 220; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid hexasodium salt (related structure); CBS-X
EINECS	Contact for details

Quality Control

Our production of Fluorescent Whitening Agent 220 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. The product is manufactured and tested in compliance with relevant industry standards. Key parameters such as active content, shade, and solubility are rigorously controlled. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with every shipment to guarantee it meets your specific application requirements.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after use to prevent moisture absorption and caking. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to yellowish-green powder
Identification (IR)	Conforms to standard
Assay (Active Content)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Whiteness Degree	Standard sample comparison
Solubility in Water	Clear, complete solution

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