Description

4,4'-Bis[(4-Anilino-6-Methoxy-1,3,5-Triazin-2-Yl)Amino]Stilbene-2,2'-Disulphonic Acid is a high-purity, synthetic organic compound belonging to the stilbene derivative class, valued for its unique optical properties. This compound is a critical intermediate in the production of advanced fluorescent whitening agents (FWAs) and optical brighteners, which are essential for enhancing the brightness and whiteness of various materials. It is primarily needed by manufacturers in the textile, paper, detergent, and plastics industries seeking to improve product aesthetics and performance.

Application

• Fluorescent Whitening Agent (FWA) Synthesis: Serves as a key intermediate in manufacturing high-performance optical brighteners for textiles and fibers.
• Paper Brightening: Used in the production of brightening agents applied to high-quality papers and boards.
• Detergent & Laundry Formulations: An essential precursor for brighteners added to laundry detergents and fabric softeners.
• Plastics and Polymer Modification: Incorporated in the synthesis of additives to improve the whiteness and visual appeal of plastics.
• Advanced Material Research: Utilized in R&D for developing novel fluorescent dyes and sensors.
• Coatings and Inks: Potential use in formulating specialty coatings and inks requiring optical enhancement.

Basic Information

Product Name	4,4'-Bis[(4-Anilino-6-Methoxy-1,3,5-Triazin-2-Yl)Amino]Stilbene-2,2'-Disulphonic Acid
CAS No.	7342-13-4
Molecular Formula	C40H34N12O8S2
Molecular Weight	875.90 g/mol
Synonyms	4,4'-Bis[(4-anilino-6-methoxy-s-triazin-2-yl)amino]stilbene-2,2'-disulfonic Acid; Stilbene Brightener Intermediate; Fluorescent Brightener 220; FWA 220; DAS 1; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[(phenylamino)-6-methoxy-1,3,5-triazin-2-yl]amino]benzenesulfonic acid]; 4,4'-Bis(4-anilino-6-methoxy-1,3,5-triazin-2-ylamino)stilbene-2,2'-disulfonate
EINECS	Contact for details

Quality Control

Our 4,4'-Bis[(4-Anilino-6-Methoxy-1,3,5-Triazin-2-Yl)Amino]Stilbene-2,2'-Disulphonic Acid is produced under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a chemical intermediate. Comprehensive Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

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). Keep away from strong acids and incompatible organic solvents. The material is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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