Description

Disodium 7-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,3-Disulphonate is a high-purity azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which provides consistent performance as a chromophore in advanced synthesis. It is primarily required by manufacturers in the dye and pigment, specialty chemical, and research and development sectors for producing vibrant and stable colorants.

Application

• Key intermediate for the synthesis of azo dyes and pigments, particularly for shades of red, orange, and brown.
• Precursor in the manufacture of reactive dyes used for coloring textiles like cotton and wool.
• Used in the production of specialty pigments for inks, coatings, and plastics.
• Acts as a chromogenic agent in analytical chemistry and biochemical research applications.
• Intermediate for food colorants (where approved) and cosmetic dyes, subject to strict regulatory compliance.
• Starting material for functional dyes used in optical data storage and non-linear optics.
• Research chemical for developing new sensitizers in photographic and imaging technologies.

Basic Information

Product Name	Disodium 7-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,3-Disulphonate
CAS No.	65151-26-0
Molecular Formula	C₁₇H₁₃N₃Na₂O₈S₂
Molecular Weight	503.41 g/mol
Synonyms	7-[(4-Amino-3-methoxyphenyl)azo]naphthalene-1,3-disulfonic acid, disodium salt; C.I. 18050; Acid Orange 142; Disodium 4-amino-3-methoxy-4'-[(1,3-disulfo-7-naphthyl)azo]azobenzene; 1,3-Naphthalenedisulfonic acid, 7-[(4-amino-3-methoxyphenyl)azo]-, disodium salt; Azo dye intermediate 65151-26-0; 4-Amino-3-methoxyazobenzene-4'-(1,3-disulfonic acid), disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 7-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,3-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for dye intermediate applications. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters 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 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.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Area %)	≥ 98.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, complete solution

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