Description

Disodium 3-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,5-Disulphonate is a high-purity azo dye intermediate essential for producing vibrant and stable colorants. This compound matters for manufacturers requiring precise chemical building blocks to ensure batch-to-batch consistency and superior performance in final products. It is primarily needed by industries involved in the synthesis of dyes and pigments for textiles, inks, and specialty coatings.

Application

• Primary Intermediate for Azo Dyes: A key precursor in the synthesis of acid dyes and direct dyes, particularly for coloring polyamide fibers like wool, silk, and nylon.
• Textile Industry: Used in the manufacturing of dyes for textiles, providing good wash and light fastness properties.
• Ink Formulation: Serves as a colorant intermediate in the production of inks for packaging, printing, and writing instruments.
• Paper Coloring: Employed in the dyeing process for specialty papers and decorative materials.
• Leather Dyeing: Used in the formulation of dyes for leather goods, offering deep and uniform coloration.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophores and dye chemistry.

Basic Information

Item	Detail
Product Name	Disodium 3-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,5-Disulphonate
CAS No.	67906-55-2
Molecular Formula	C17H13N3Na2O8S2
Molecular Weight	497.41 g/mol
Synonyms	Acid Red 249; C.I. 18134; Disodium 4-Amino-3-methoxyazobenzene-3',7'-disulfonate; 3-[(4-Amino-3-methoxyphenyl)azo]-1,5-naphthalenedisulfonic acid disodium salt; 1,5-Naphthalenedisulfonic acid, 3-[(4-amino-3-methoxyphenyl)azo]-, disodium salt; Azo Dye Intermediate 67906-55-2; 4-Amino-3-methoxyazobenzene-3',7'-disulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 3-[(4-Amino-3-Methoxyphenyl)Azo]Naphthalene-1,5-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) detailing purity, identity, 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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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