Description

Trisodium 2-[4-[2-[4-[[1-[[(2-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo]-2-Sulphonatophenyl]Vinyl]-3-Sulphonatophenyl]-2H-Naphtho[1,2-D]Triazole-5-Sulphonate is a high-purity, water-soluble anionic dye and optical brightener agent. This compound is valued for its strong fluorescence and excellent substantivity to various substrates, providing superior whitening and brightening effects. It is a critical component for manufacturers in the textile, paper, detergent, and plastics industries seeking to enhance the visual appeal and perceived quality of their products. Consistent quality and reliable supply are paramount for industrial-scale production processes.

Application

• Textile Industry: As a fluorescent whitening agent (FWA) for synthetic fibers like polyamide (nylon) and polyester, and for whitening cotton and wool blends.
• Paper Manufacturing: To increase the brightness and whiteness of high-quality papers, including printing and writing grades, and specialty papers.
• Detergent & Laundry Care: A key ingredient in laundry detergents and fabric conditioners to impart a "whiter-than-white" appearance to textiles.
• Plastics & Polymers: For the optical brightening of thermoplastics, synthetic fibers during polymerization (mass coloration), and coatings.
• Cosmetics & Personal Care: Used in formulations where a whitening or brightening effect is desired, subject to regional regulatory compliance.
• Advanced Materials: Potential applications in light-harvesting systems, sensors, or as a marker in biochemical research due to its fluorescent properties.

Basic Information

Item	Details
Product Name	Trisodium 2-[4-[2-[4-[[1-[[(2-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo]-2-Sulphonatophenyl]Vinyl]-3-Sulphonatophenyl]-2H-Naphtho[1,2-D]Triazole-5-Sulphonate
CAS No.	63543-86-2
Molecular Formula	C41H27N6Na3O13S4
Molecular Weight	~1052.92 g/mol
Synonyms	Fluorescent Brightener 220; Tinopal CBS-X; C.I. Fluorescent Brightener 220; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]benzenesulfonic acid] trisodium salt; 4,4'-Bis[[4-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]stilbene-2,2'-disulfonic acid trisodium salt; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]-, trisodium salt; Optical Brightener OB-1 (industry-specific alias).
EINECS	Contact for details

Quality Control

Our production of Trisodium 2-[4-[2-[4-[[1-[[(2-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo]-2-Sulphonatophenyl]Vinyl]-3-Sulphonatophenyl]-2H-Naphtho[1,2-D]Triazole-5-Sulphonate adheres to a rigorous quality management system. Every batch is tested against stringent in-house specifications to ensure consistent purity, color strength, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment. We support compliance with relevant global standards for industrial and specialty chemical applications.

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 material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellowish to light brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content (Sulfated)	Contact for details
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Freely soluble

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