Description

Disodium 5-[[6-anilino-4-[2-(2-hydroxyethoxy)ethoxy]-1,3,5-triazin-2-yl]amino]-2-[2-[4-[[6-anilino-4-(2-hydroxypropoxy)-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]vinyl]benzenesulphonate is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene family. It is engineered to deliver exceptional optical brightening effects on cellulosic and polyamide fibers, enhancing whiteness and brightness under UV light. This compound is a critical additive for manufacturers in the textile, paper, and detergent industries seeking to improve the visual appeal and perceived cleanliness of their products.

Application

• Textile Finishing: Primary application for whitening and brightening cotton, viscose, and nylon fabrics during scouring, bleaching, or finishing processes.
• Laundry Detergents & Fabric Softeners: Key ingredient in premium liquid and powder detergents to impart a "whiter-than-white" appearance to laundered garments.
• Paper Manufacturing: Used in coating formulations and pulp treatment to achieve high brightness grades in fine papers, tissues, and board.
• Synthetic Fibers: Effective for the mass pigmentation and spin finishing of polyamide (nylon) fibers to correct yellowness.
• Plastics and Polymers: Incorporated into certain polymers to improve initial whiteness and counteract yellowing.

Basic Information

Product Name	Disodium 5-[[6-anilino-4-[2-(2-hydroxyethoxy)ethoxy]-1,3,5-triazin-2-yl]amino]-2-[2-[4-[[6-anilino-4-(2-hydroxypropoxy)-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]vinyl]benzenesulphonate
CAS No.	68025-20-7
Molecular Formula	C46H44N10Na2O14S2
Molecular Weight	1030.99 g/mol
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Blankophor BBH; Disodium 4,4'-bis[[4-anilino-6-[2-(2-hydroxyethoxy)ethoxy]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate derivative; Stilbene triazine fluorescent whitening agent; Optical Brightener OB-1 for cellulose; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[2-(2-hydroxyethoxy)ethoxy]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] disodium salt
EINECS	Contact for details

Quality Control

Our disodium triazinylaminostilbene fluorescent whitening agent is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for strength and shade, and tests for solubility and ionic content to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) detailing all specifications are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed 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)	≥ 95.0%
Strength (Spectrophotometry)	100 ± 3% of standard
Water Content (Karl Fischer)	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Solubility in Water	Clear solution

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