Description

Hexasodium 2,2'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-Morpholino-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. It is valued for its exceptional ability to absorb UV light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of treated materials. This compound is a critical additive for manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior optical brightening effects. Its multi-sulfonated structure ensures excellent solubility and substantivity across a wide range of application processes.

Application

• Textile Finishing: Primary application for whitening and brightening cotton, nylon, wool, and synthetic fibers during scouring, bleaching, or finishing baths.
• Laundry Detergents & Fabric Softeners: A key ingredient in premium liquid and powder detergents to impart a "whiter-than-white" appearance to laundered fabrics.
• Paper Manufacturing: Used in coating formulations and pulp treatment to achieve high brightness grades in fine papers, tissue, and board.
• Plastics and Polymers: Incorporated into polymers like PVC, polyolefins, and styrenics to correct yellowness and improve the visual appeal of finished plastic products.
• Soaps and Personal Care: Employed in certain soap bars and cosmetic formulations where a brightening effect is desired.
• Synthetic Fibers: Applied during the spin finish or dope dyeing of man-made fibers to enhance intrinsic whiteness.

Basic Information

Item	Details
Product Name	Hexasodium 2,2'-[Vinylenebis[(3-Sulfonato-4,1-Phenylene)Imino[6-Morpholino-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,4-Disulphonate)
CAS No.	52301-70-9
Molecular Formula	C46H34N12Na6O18S6
Molecular Weight	~1331.1 g/mol
Synonyms	Fluorescent Brightener 220 (FB 220); Tinopal CBS-X; Hexasodium 4,4'-bis[[4-anilino-6-morpholino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; Stilbene triazine fluorescent whitening agent; Optical Brightener OB-220; FWA 220; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid hexasodium salt
EINECS	257-843-1

Quality Control

Our production of Hexasodium 2,2'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Imino[6-Morpholino-1,3,5-Triazine-4,2-Diyl]Imino]]Bis(Benzene-1,4-Disulphonate) adheres to stringent quality management protocols. Every batch is subjected to comprehensive analytical testing, including HPLC for purity and assay, spectrophotometry for strength and shade, and checks for insolubles and heavy metals. We provide Certificates of Analysis (COA) with each shipment, detailing all critical specifications to ensure batch-to-batch consistency and performance reliability for your formulations.

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 original container must be kept tightly sealed to prevent absorption of atmospheric moisture, 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)	≥ 95.0%
Strength (Spectrophotometry)	100 ± 3% (vs. Standard)
Water Content (Karl Fischer)	≤ 5.0%
pH (1% Aqueous Solution)	7.0 - 9.5
Ash Content	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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