Description

Methanaminium, N,N,N-trimethyl-, salt with 3,3-6-(2-hydroxyethyl)amino-1,3,5-triazine-2,4-diylbisimino(2-methyl-4,1-phenylene)azobis1,5-naphthalenedisulfonic acid (4:1) is a high-performance, water-soluble anionic dye complex, also known as a fluorescent whitening agent (FWA) or optical brightener. This compound is engineered to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of materials. It is a critical component for manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior product aesthetics and quality.

Application

• Textile Finishing: Applied to cotton, polyester, and polyamide fibers to impart a brilliant white appearance and counteract yellowing.
• Laundry Detergent Formulation: A key ingredient in premium powder and liquid detergents to make white fabrics appear cleaner and brighter after washing.
• Paper Manufacturing: Used in the production of high-quality writing, printing, and tissue papers to achieve a high degree of whiteness and opacity.
• Plastics and Synthetic Fibers: Incorporated during the polymerization or molding process to brighten plastics, acrylics, and nylon.
• Cosmetics and Personal Care: Employed in certain formulations, such as shampoos and soaps, to enhance visual appeal.
• Coatings and Paints: Used in specific industrial coatings to improve brightness and visual quality.

Basic Information

Product Name	Methanaminium, N,N,N-trimethyl-, salt with 3,3-6-(2-hydroxyethyl)amino-1,3,5-triazine-2,4-diylbisimino(2-methyl-4,1-phenylene)azobis1,5-naphthalenedisulfonic acid (4:1)
CAS No.	131013-83-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Fluorescent Brightener 260; Optical Brightener 260; FWA 260; OB 260; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid derivative; Tinopal® CBS-X; Blankophor® BSU liq.; Stilbene-based optical brightener; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] tetrasodium salt (related structure).
EINECS	Contact for details

Quality Control

Our production of this optical brightener adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including strength (tinctorial value), hue, solubility, and purity. A comprehensive Certificate of Analysis (COA) documenting these results is provided with each shipment to 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 to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Yellowish to off-white powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Strength (Tinctorial Value)	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Ash Content	Max. 0.5%
Solubility in Water	Clear, complete solution at 1%
pH (1% Solution)	7.0 - 9.0

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