Description

7-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonic Acid is a high-purity, synthetic azo dye intermediate characterized by its distinct aromatic disulphonic acid structure. This compound is essential for producing vibrant and stable colorants, offering manufacturers a reliable building block for complex dye synthesis. It is primarily required by the textile, ink, and specialty chemical industries for creating high-performance pigments and dyes.

Application

• Primary Intermediate for Azo Dyes: Serves as a key precursor in the synthesis of acid dyes and direct dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings, providing excellent color strength.
• Laboratory Reagent: Employed in research and development for studying azo coupling reactions and dye chemistry.
• Specialty Chemical Synthesis: Acts as a functional intermediate for creating more complex chemical entities in pharmaceutical and agrochemical research.
• pH Indicator Development: Potential use in the formulation of colorimetric pH indicators due to its azo chromophore.

Basic Information

Product Name	7-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonic Acid
CAS No.	61827-77-8
Molecular Formula	C16H13N3O6S2
Molecular Weight	407.42 g/mol
Synonyms	7-[(4-Aminophenyl)diazenyl]naphthalene-1,3-disulfonic acid; 4-Aminoazobenzene-2',4'-disulfonic acid; 1,3-Naphthalenedisulfonic acid, 7-[(4-aminophenyl)azo]-; Acid Yellow 36 intermediate; C.I. 13065; Azoic Diazo Component 44; 4-Aminoazobenzene-2,4'-disulfonic Acid
EINECS	Contact for details

Quality Control

Our production of 7-[(4-Aminophenyl)Azo]Naphthalene-1,3-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR spectroscopy, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm

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