Description

7,7'-Iminobis[4-Hydroxy-3-[(2-Methoxyphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium] Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vivid and stable color properties in advanced formulations. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for the synthesis of high-performance dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-value, complex azo dyes for textiles, leather, and paper.
• Specialty Ink Formulations: Used in the production of pigments for inks requiring specific color fastness and solubility properties.
• Functional Colorants: Potential applications in the development of colorants for plastics, coatings, and other polymer systems.
• Research & Development: Serves as a critical reagent in chemical R&D for creating novel chromophores and studying dye chemistry.
• Analytical Chemistry: May be employed as a staining agent or colorimetric indicator in specific laboratory methodologies.

Basic Information

Product Name	7,7'-Iminobis[4-Hydroxy-3-[(2-Methoxyphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium] Salt
CAS No.	68959-35-3
Molecular Formula	C34H26N6Na2O10S2
Molecular Weight	804.77 g/mol (approx.)
Synonyms	Acid Black 210; C.I. 300310; Sodium 7,7'-iminobis[4-hydroxy-3-[(2-methoxyphenyl)azo]naphthalene-2-sulfonate]; 7,7'-Iminodi(4-hydroxy-3-[(2-methoxyphenyl)azo]-2-naphthalenesulfonic acid) disodium salt; Azo Dye Intermediate 68959-35-3; Bisazo dye intermediate; Light Fast Black Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of 7,7'-Iminobis[4-Hydroxy-3-[(2-Methoxyphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium] Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	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.