Description

Disodium 5-[Ethyltolylamino]-2-[[4-[(3-Sulphonatophenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties and stability. Its primary value lies in providing a consistent and vibrant colorant precursor for demanding industrial applications, ensuring batch-to-batch reproducibility. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking reliable performance in their dye synthesis processes.

Application

• Primary intermediate for the synthesis of high-grade azo dyes and pigments used in textile coloration.
• Key component in the production of inks for digital, packaging, and security printing applications.
• Used in the formulation of specialty coatings and paints requiring specific color fastness and light stability.
• Research and development of novel functional dyes for non-textile applications, including optical media and sensors.
• Potential use as a colorant precursor in the paper and leather processing industries.

Basic Information

Item	Details
Product Name	Disodium 5-[Ethyltolylamino]-2-[[4-[(3-Sulphonatophenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate
CAS No.	73398-26-2
Molecular Formula	C37H28N6Na2O7S2
Molecular Weight	794.77 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 5-(N-ethyl-4-methylphenylamino)-2-[[4-[(3-sulfophenyl)azo]-1-naphthyl]azo]benzenesulfonate; 5-[Ethyl(4-methylphenyl)amino]-2-[[4-[(3-sulfophenyl)azo]-1-naphthyl]azo]benzenesulfonic acid disodium salt; Azo Black 210; C.I. Acid Black 210; Dye Intermediate 73398-26-2
EINECS	Contact for details

Quality Control

Our production of Disodium 5-[Ethyltolylamino]-2-[[4-[(3-Sulphonatophenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate adheres to stringent quality management protocols to ensure high purity and consistent performance. Every batch is analyzed against rigorous in-house specifications, which are aligned with industry standards for dye intermediates. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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