Description

1,3,6-Naphthalenetrisulfonic Acid, 7,7-1,3-Propanediylbisimino(6-Fluoro-1,3,5-Triazine-4,2-Diyl)Imino2-(Aminocarbonyl)Amino-4,1-Phenyleneazobis-, Sodium Salt is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene class. Its primary value lies in its exceptional ability to absorb UV light and re-emit it as visible blue light, thereby compensating for yellowing and enhancing the perceived brightness and whiteness of materials. This compound is critically needed by manufacturers in the textile, paper, detergent, and plastics industries seeking to achieve superior optical brightening effects on cellulose, polyamide, and wool fibers.

Application

• Textile Finishing: As a key optical brightener for cotton, viscose, polyamide, and wool fabrics during washing, bleaching, or finishing processes.
• Paper Manufacturing: To increase the whiteness and brightness of high-quality writing, printing, and tissue papers.
• Detergent & Laundry Care: Formulated into laundry detergents and fabric softeners to impart a "whiter-than-white" appearance to laundered textiles.
• Plastics and Synthetic Fibers: Incorporated into polymers and synthetic fibers (e.g., nylon) to improve initial whiteness and mask inherent yellowness.
• Advanced Coating Formulations: Used in specialty coatings and paints where optical brightness is a required functional property.

Basic Information

Product Name	1,3,6-Naphthalenetrisulfonic Acid, 7,7-1,3-Propanediylbisimino(6-Fluoro-1,3,5-Triazine-4,2-Diyl)Imino2-(Aminocarbonyl)Amino-4,1-Phenyleneazobis-, Sodium Salt
CAS No.	143683-24-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Fluorescent Brightener 260; FWA 260; Optical Brightener 260; C.I. Fluorescent Brightener 260; 7,7'-(1,3-Propanediylbis(imino(6-fluoro-1,3,5-triazine-4,2-diyl)imino-2-((aminocarbonyl)amino)-4,1-phenylene)azo))bis(1,3,6-naphthalenetrisulfonic acid) sodium salt; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[4-[[2-(aminocarbonyl)amino]-4-[(3-sulfophenyl)azo]phenyl]amino]-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]-, sodium salt (1:6) (CA Index Name); Sodium 4,4'-bis[[4-anilino-6-morpholino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate (related stilbene class).
EINECS	Contact for details

Quality Control

Our production of this fluorescent whitening agent adheres to strict quality management systems. Every batch is analyzed to ensure consistent strength, hue, and solubility characteristics critical for industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and spectral properties is provided with each shipment to guarantee it meets your specific formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Yellowish to light brown powder
Identification (IR)	Conforms to standard spectrum
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content (Sulfated)	Contact for details
Fluorescence Intensity	Compared to standard (100 ± 5%)
Solubility in Water	Clear, yellow 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.