Description

7-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Naphthalene-1,3-Disulphonic Acid CAS NO 86-63-5 is a synthetic azo dye intermediate characterized by its disulfonic acid functional groups. This compound is valued for its role as a key precursor in the production of high-performance, water-soluble dyes and pigments. It is primarily required by manufacturers in the textile, leather, and specialty chemical industries seeking to develop vivid and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as the core building block for synthesizing acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Leather Dyeing: Used in the formulation of dyes for leather goods, providing good penetration and color fastness.
• Paper Coloring: Employed in the production of dyes for specialty papers and packaging materials.
• Ink Manufacturing: A component in the synthesis of pigments for inks, including those for writing, printing, and packaging.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Research & Development: Utilized in chemical research for studying azo coupling reactions and developing new chromophores.

Basic Information

Product Name	7-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Naphthalene-1,3-Disulphonic Acid
CAS No.	86-63-5
Molecular Formula	C18H16N4O7S2
Molecular Weight	464.47 g/mol
Synonyms	Acid Red 4 Precursor; 1,3-Naphthalenedisulfonic acid, 7-[(4-amino-5-methoxy-2-methylphenyl)azo]-; 7-[(4-Amino-5-methoxy-2-methylphenyl)diazenyl]naphthalene-1,3-disulfonic acid; C.I. 14710 Intermediate; Azoic Diazo Component 4; 4-Amino-5-methoxy-2-methylazobenzene-2',4'-disulfonic acid; 86-63-5; Azo dye intermediate 86-63-5
EINECS	201-690-6

Quality Control

Our production of 7-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Naphthalene-1,3-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance as a dye intermediate. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and solubility are available upon request to support your quality assurance processes.

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). Keep away from strong oxidizing agents and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Solubility (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.