Description

7-Hydroxy-8-[[2-Methyl-4-[[6,8-Bis(Sodiosulfo)-2-Naphthalenyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its core value lies in its ability to impart a strong, stable color, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require consistent, high-performance colorants for demanding applications.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for coloring polyamide fibers like nylon and wool.
• Textile Industry: Used in the production of dyes for fabrics requiring bright, wash-fast shades.
• Ink Manufacturing: Employed in the formulation of specialized inks for packaging, security printing, and digital applications.
• Pigment Production: Acts as a precursor for lake pigments used in plastics, paints, and coatings.
• Research & Development: Utilized in chemical research for developing new chromophores and studying dye-sensitized processes.
• Analytical Reagent: Can be used as a colorimetric indicator or complexometric agent in specific analytical chemistry applications.

Basic Information

Product Name	7-Hydroxy-8-[[2-Methyl-4-[[6,8-Bis(Sodiosulfo)-2-Naphthalenyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulfonic Acid Disodium Salt
CAS No.	6226-88-6
Molecular Formula	C27H16N4Na4O14S4
Molecular Weight	858.64 g/mol
Synonyms	Acid Black 210; C.I. 28440; 7-Hydroxy-8-[(2-methyl-4-[(6,8-disulfo-2-naphthyl)azo]phenyl)azo]naphthalene-1,3-disulfonic acid tetrasodium salt; Tetrasodium 7-hydroxy-8-[(2-methyl-4-[(6,8-disulphonato-2-naphthyl)azo]phenyl)azo]naphthalene-1,3-disulphonate; Azo dye intermediate 6226-88-6; Disodium 7-hydroxy-8-[[2-methyl-4-[[6,8-bis(sodiosulfo)-2-naphthalenyl]azo]phenyl]azo]naphthalene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our 7-Hydroxy-8-[[2-Methyl-4-[[6,8-Bis(Sodiosulfo)-2-Naphthalenyl]Azo]Phenyl]Azo]Naphthalene-1,3-Disulfonic Acid Disodium Salt is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent color strength, and batch-to-batch uniformity, meeting the exacting standards required for industrial dye synthesis. Comprehensive Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are provided to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed when not in use to prevent absorption of moisture and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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