Description

Disodium 6-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colors. This compound is valued for its role as a key precursor in the synthesis of acid dyes and reactive dyes, offering excellent coupling properties and batch-to-batch consistency. It is primarily required by manufacturers in the textile, leather, paper, and specialty ink industries seeking reliable intermediates for high-performance dye production.

Application

• Primary Intermediate for Acid Dyes: A crucial coupling component for manufacturing acid dyes used on nylon, wool, and silk fibers.
• Synthesis of Reactive Dyes: Used in the production of reactive dyes for cotton and other cellulosic fibers, providing strong covalent bonds for excellent wash-fastness.
• Leather Dyeing: Serves as an intermediate for dyes applied in the leather tanning and finishing industry.
• Paper Coloring: Employed in the manufacture of dyes for specialty paper and paperboard products.
• Ink Formulation: Used as a chemical building block for certain types of industrial and inkjet printing inks.
• Research & Development: A valuable compound for R&D laboratories focusing on novel dye chemistry, photochromic materials, or chemical sensors.

Basic Information

Product Name	Disodium 6-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonate
CAS No.	67875-26-7
Molecular Formula	C16H11N3Na2O6S2
Molecular Weight	459.38 g/mol
Synonyms	6-[(4-Aminophenyl)azo]-1,3-naphthalenedisulfonic acid, disodium salt; Acid Orange 12 Intermediate; C.I. Acid Orange 12, Disodium Salt; 1,3-Naphthalenedisulfonic acid, 6-[(4-aminophenyl)azo]-, disodium salt; 4-Aminoazobenzene-2',4'-disulfonic acid disodium salt; Azoic Diazo Component 12; Disodium 4-aminoazobenzene-2',4'-disulphonate
EINECS	Contact for details

Quality Control

Our Disodium 6-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and solubility. Certificates of Analysis (COA) detailing assay, impurity profile, and physical characteristics 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 place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content	≤ 2.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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