Description

Hexasodium 2,2'-[Azoxybis[(2-Sulphonato-4,1-Phenylene)Vinylene(3-Sulphonato-4,1-Phenylene)]]Bis[-2H-Naphtho[1,2-D]Triazole-5-Sulphonate] is a high-purity, water-soluble anionic dye and optical brightener agent. This compound is engineered to deliver exceptional performance as a fluorescent whitening agent (FWA) and functional dye, providing superior brightness and color properties. It is a critical raw material for industries requiring advanced optical effects, consistent quality, and reliable supply chains for their formulations.

Application

• Optical Brightening Agent (OBA) in high-grade paper, specialty coatings, and premium plastics.
• Fluorescent Whitening Agent (FWA) for synthetic fibers, textiles, and detergents to enhance perceived whiteness.
• Functional Dye Intermediate in the synthesis of advanced colorants and pigments.
• Security Ink Formulation for banknotes, certificates, and anti-counterfeiting features due to its specific fluorescence.
• Liquid Crystal Display (LCD) and Optical Film manufacturing to modify light properties.
• Analytical Chemistry Reagent as a fluorescent probe or tracer in biochemical assays.

Basic Information

Product Name	Hexasodium 2,2'-[Azoxybis[(2-Sulphonato-4,1-Phenylene)Vinylene(3-Sulphonato-4,1-Phenylene)]]Bis[-2H-Naphtho[1,2-D]Triazole-5-Sulphonate]
CAS No.	66214-50-4
Molecular Formula	C52H24N8Na6O22S6
Molecular Weight	Approx. 1447.0 g/mol
Synonyms	Hexasodium 4,4'-bis[[4-[2-[4-(2-sulfonatostyryl)-3-sulfonatophenyl]vinyl]-6-(1,2,3-triazol-2-yl)-1,3-benzenedisulfonate]; Optical Brightener 220; FWA 220; C.I. Fluorescent Brightener 220; 2,2'-(1,2-Diazenediyl)bis[5-[2-[4-(2-sulfooxyethenyl)-2-sulfophenyl]ethenyl]-benzenesulfonic acid hexasodium salt; Benzenesulfonic acid, 2,2'-(1,2-diazenediyl)bis[5-[2-[4-(2-sulfooxyethenyl)-2-sulfophenyl]ethenyl]-, hexasodium salt
EINECS	Contact for details

Quality Control

Our production of Hexasodium 2,2'-[Azoxybis[(2-Sulphonato-4,1-Phenylene)Vinylene(3-Sulphonato-4,1-Phenylene)]]Bis[-2H-Naphtho[1,2-D]Triazole-5-Sulphonate] adheres to stringent quality management protocols. Every batch is analyzed to ensure compliance with precise specifications for purity, color strength, and solubility. A comprehensive Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided to guarantee traceability and performance consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture (Karl Fischer)	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Fluorescence Intensity	Conforms to customer standard

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