Description

Disodium 2-[4-[[4-[[1-Ethyl-1,6-Dihydro-2-Hydroxy-4-Methyl-6-Oxo-5-(Sulphonatomethyl)-3-Pyridyl]Azo]Benzoyl]Amino]Phenyl]-6-Methylbenzothiazole-7-Sulphonate is a high-purity, water-soluble anionic dye intermediate characterized by its complex azo and benzothiazole structure. This compound is valued for its ability to impart specific color properties and functional characteristics in advanced material formulations. It is primarily utilized by manufacturers in the textile dyeing, specialty inks, and functional polymer industries seeking consistent and reliable performance.

Application

• Textile Dyeing Intermediate: A key precursor for synthesizing high-performance, wash-fast azo dyes for synthetic and natural fibers.
• Functional Dye for Polymers: Used in the coloration of engineering plastics, films, and specialty coatings where thermal stability is required.
• Specialty Ink Formulation: Serves as a colorant component in high-quality inks for digital printing and security applications.
• Biomedical Staining: Potential use as a specialized stain or marker in histological and diagnostic applications due to its specific light-absorbing properties.
• Optical Material Development: Investigated for use in non-linear optical (NLO) materials and light-harvesting systems.
• Analytical Chemistry Reagent: Employed as a chromogenic agent or complexometric indicator in specific analytical methods.

Basic Information

Item	Details
Product Name	Disodium 2-[4-[[4-[[1-Ethyl-1,6-Dihydro-2-Hydroxy-4-Methyl-6-Oxo-5-(Sulphonatomethyl)-3-Pyridyl]Azo]Benzoyl]Amino]Phenyl]-6-Methylbenzothiazole-7-Sulphonate
CAS No.	85896-04-4
Molecular Formula	C31H25N5Na2O10S3
Molecular Weight	777.71 g/mol
Synonyms	Acid Yellow 219; C.I. 13915; Disodium 6-methyl-2-[4-[[4-[[(2-hydroxy-4-methyl-6-oxo-1-ethyl-5-sulphonatomethyl-3-pyridinyl)azo]benzoyl]amino]phenyl]benzothiazole-7-sulphonate; 2-[4-[[4-[[1-Ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-(sulphonatomethyl)-3-pyridyl]azo]benzoyl]amino]phenyl]-6-methylbenzothiazole-7-sulphonic acid disodium salt; C.I. Acid Yellow 219; Lanasyn Yellow 2GL; Telon Yellow K-2GL; Supranol Yellow 4GL
EINECS	Contact for details

Quality Control

Our production of Disodium 2-[4-[[4-[[1-Ethyl-1,6-Dihydro-2-Hydroxy-4-Methyl-6-Oxo-5-(Sulphonatomethyl)-3-Pyridyl]Azo]Benzoyl]Amino]Phenyl]-6-Methylbenzothiazole-7-Sulphonate adheres to a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency meet exacting specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and physical properties.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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