Description

4,4'-Bis[[4-[Bis(2-Hydroxyethyl)Amino]-6-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Sodium Salt, Compound With 2,2'-Iminodiethanol is a high-performance fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene class. This compound is engineered to provide exceptional optical brightening effects 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 additive for manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior product aesthetics and market competitiveness.

Application

This specialized fluorescent whitening agent is designed for demanding industrial applications where high whitening efficiency and substrate compatibility are paramount.

• Textile Finishing: Primary application for whitening and brightening cotton, nylon, polyester, and blended fabrics during scouring, bleaching, or finishing processes.
• Paper Manufacturing: Used in coating formulations and pulp to achieve high-brightness paper grades for premium printing, writing, and packaging.
• Laundry Detergents & Fabric Softeners: A key ingredient in household and industrial detergent formulations to impart a "whiter-than-white" appearance to laundered textiles.
• Plastics and Synthetic Fibers: Incorporated into polymers like PVC, polyolefins, and polystyrene to correct yellowness and enhance the brightness of molded articles and fibers.
• Soaps and Personal Care Products: Used to improve the visual appeal of bar soaps, liquid soaps, and certain cosmetic formulations.
• Advanced Coatings: Employed in specific coating systems where optical brightening properties are required for specialized visual effects.

Basic Information

Item	Details
Product Name	4,4'-Bis[[4-[Bis(2-Hydroxyethyl)Amino]-6-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Sodium Salt, Compound With 2,2'-Iminodiethanol
CAS No.	85187-64-0
Molecular Formula	C40H48N12Na2O16S2 • 2(C4H11NO2)
Molecular Weight	Contact for details
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Stilbene triazine fluorescent whitening agent; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid derivative; Optical Brightener OB-1 (industry-specific); Blankophor CBS-X; Leucophor CBS; Sodium 4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-methoxy-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate compound with diethanolamine
EINECS	Contact for details

Quality Control

Our production of 4,4'-Bis[[4-[Bis(2-Hydroxyethyl)Amino]-6-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Sodium Salt, Compound With 2,2'-Iminodiethanol adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance (whitening strength), and physical properties. Certificates of Analysis (COA) documenting key parameters such as assay, hue, and solubility are provided to guarantee product integrity and support your quality assurance processes.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after each use 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%
Whitening Strength	100 ± 3% (vs. Standard)
Hue	Standard blue-white
Moisture Content (KF)	≤ 5.0%
Ash Content	≤ 0.5%
Solubility in Water	Clear, yellow-green solution

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