Description

4,4'-Bis[[6-Anilino-4-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Compound With 2,2',2''-Nitrilotriethanol (1:2) is a high-performance fluorescent whitening agent (FWA) or optical brightener, supplied as a salt with triethanolamine to enhance solubility and stability. This compound is engineered to absorb ultraviolet light and re-emit it as visible blue light, effectively counteracting yellowing and significantly improving the perceived whiteness and brightness of materials. It is a critical additive for manufacturers in the textile, paper, detergent, and plastics industries seeking superior product aesthetics and quality.

Application

• Textile Finishing: Primary application for whitening and brightening natural and synthetic fibers like cotton, polyester, and polyamide in fabrics and yarns.
• Paper Manufacturing: Used in coating formulations and pulp to produce high-brightness printing, writing, and specialty papers.
• Detergent & Laundry Care: A key ingredient in laundry detergents, fabric softeners, and soaps to impart a "whiter-than-white" appearance to laundered textiles.
• Plastics and Polymers: Incorporated into polymers such as PVC, polyethylene, and polystyrene to enhance the brightness and color of finished plastic products.
• Cosmetics and Personal Care: Employed in formulations for shampoos, conditioners, and soaps to improve visual appeal.
• Advanced Coatings: Used in paints, varnishes, and other coating systems to achieve optical brightening effects.

Basic Information

Product Name	4,4'-Bis[[6-Anilino-4-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Compound With 2,2',2''-Nitrilotriethanol (1:2)
CAS No.	61136-17-2
Molecular Formula	C46H48N12O10S2 · 2(C6H15NO3)
Molecular Weight	Contact for details
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Stilbene triazine derivative; 4,4'-Bis[(4-anilino-6-methoxy-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid ditriethanolamine salt; Optical Brightener OB-1 (related class); 2,2'-(1,2-Ethenediyl)bis[5-[[4-(phenylamino)-6-methoxy-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] compound with 2,2',2''-nitrilotris[ethanol] (1:2)
EINECS	Contact for details

Quality Control

Our production of this fluorescent whitening agent adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through advanced analytical techniques including HPLC for assay and impurity profiling. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and physical specifications is provided with every shipment to support your quality assurance and regulatory needs.

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 opening to prevent moisture absorption, which can affect performance.

Specification

Item	Specification
Appearance	Light yellow to yellow powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 97.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Whiteness Degree	Standard sample comparison

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