Description

4-Hydroxy-7-[[[(5-Hydroxy-7-Sulpho-2-Naphthyl)Amino]Carbonyl]Amino]-3-[(6-Sulpho-2-Naphthyl)Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, synthetic organic dye intermediate of significant industrial importance. This compound is valued for its role as a key precursor in the production of high-performance, water-soluble azo dyes and pigments. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking to develop products with specific color fastness and solubility profiles.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of acid dyes and direct dyes for coloring nylon, wool, silk, and paper.
• Textile Industry: Used in the manufacturing of dyes for textile fibers, providing vibrant colors with good wash and light fastness.
• Leather Processing: Employed in the production of dyes for leather finishing, offering deep, uniform shades.
• Ink Formulation: Acts as a colorant intermediate in the production of specialty inks, including those for ink-jet printing.
• Biological Staining: Potential use as an intermediate for histological stains and indicators in laboratory settings.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.

Basic Information

Product Name	4-Hydroxy-7-[[[(5-Hydroxy-7-Sulpho-2-Naphthyl)Amino]Carbonyl]Amino]-3-[(6-Sulpho-2-Naphthyl)Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	84100-93-6
Molecular Formula	C31H19N4O12S3Na3 (or related sodium salt form)
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 300310; 4-Hydroxy-3-[(6-sulfo-2-naphthalenyl)azo]-7-[[[[5-hydroxy-7-sulfo-2-naphthalenyl)amino]carbonyl]amino]-2-naphthalenesulfonic acid, trisodium salt; Trisodium 4-hydroxy-3-[(6-sulphonato-2-naphthyl)azo]-7-[[(5-hydroxy-7-sulphonato-2-naphthyl)carbamoyl]amino]naphthalene-2-sulphonate; Azo dye intermediate 84100-93-6; Black 210
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems. Every batch undergoes rigorous analytical testing to ensure consistency and meets the specifications required for high-end dye synthesis. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

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 light-sensitive and should be stored away from direct light exposure. Keep the container tightly sealed to minimize contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (Water)	Soluble

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