Description

Disodium 2-[[2,6-Dihydroxy-3-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Benzoate is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties and stability. This compound is critical for manufacturers requiring precise color development and consistent batch-to-batch performance in demanding applications. It is primarily utilized by producers of specialized dyes and pigments for the textile, ink, and advanced material coating industries.

Application

• Primary intermediate for the synthesis of high-value, water-soluble azo dyes and pigments.
• Key chromophore component in the production of textile dyes for natural and synthetic fibers.
• Used in formulating specialized inks for jet printing and packaging applications.
• Employed in the manufacture of colorants for paper and leather products.
• Acts as a functional intermediate in the research and development of novel optical materials and sensors.
• Potential use as a staining agent or colorimetric indicator in select analytical chemistry applications.

Basic Information

Product Name	Disodium 2-[[2,6-Dihydroxy-3-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Benzoate
CAS No.	64683-38-1
Molecular Formula	C19H12N4Na2O8S
Molecular Weight	494.37 g/mol
Synonyms	Disodium 2,2'-(1,3,4-Thiadiazole-2,5-diyl)bis(5-sulfobenzoate); Benzoic acid, 2,2'-(1,3,4-thiadiazole-2,5-diyl)bis-, disodium salt, sulfonated; C.I. Acid Yellow 219; Azo dye intermediate 64683-38-1; 2,2'-(1,3,4-Thiadiazole-2,5-diyl)bis(5-sulfobenzoic acid) disodium salt; Thiadiazole-based disulfonated dye; Water-soluble azo dye precursor
EINECS	Contact for details

Quality Control

Our production of Disodium 2-[[2,6-Dihydroxy-3-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Benzoate adheres to stringent quality management protocols to ensure high purity and consistent performance. Every batch is analyzed using advanced techniques like HPLC and spectrophotometry to verify critical parameters such as assay, color strength, and impurity profiles. Certificates of Analysis (COA) documenting full specifications are provided with each shipment to support your quality assurance and regulatory needs.

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); ensure the container is kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 30.0%

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