Description

4-[(3-Aminobenzoyl)Amino]-5-Hydroxynaphthalene-1,7-Disulphonic Acid is a specialized organic intermediate featuring a naphthalene core substituted with amino, hydroxyl, and disulphonic acid functional groups. This compound matters for its role as a key precursor in the synthesis of high-value, complex dyes and pigments, particularly azo dyes, where it contributes to color strength, lightfastness, and specific hue properties. Industries involved in the production of textiles, inks, and specialty colorants require this high-purity intermediate to ensure consistent batch quality and performance in their final formulations.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial coupling component in the synthesis of acid dyes, direct dyes, and reactive dyes for textile applications.
• Specialty Ink Manufacturing: Used in the production of high-performance inks for packaging, security printing, and digital textiles.
• Functional Dye Synthesis: A building block for dyes used in biological staining, laser applications, and liquid crystal displays (LCDs).
• Research & Development: Employed in academic and industrial R&D labs for developing novel chromophores and functional materials.
• Fine Chemical Production: Acts as an intermediate in the multi-step synthesis of more complex pharmaceutical or agrochemical agents.

Basic Information

Item	Details
Product Name	4-[(3-Aminobenzoyl)Amino]-5-Hydroxynaphthalene-1,7-Disulphonic Acid
CAS No.	70239-77-9
Molecular Formula	C₁₇H₁₄N₂O₈S₂
Molecular Weight	438.43 g/mol
Synonyms	5-Hydroxy-4-[(3-aminobenzoyl)amino]-1,7-naphthalenedisulfonic Acid; 4-[(3-Aminobenzamido)]-5-hydroxy-1,7-naphthalenedisulfonic Acid; 1,7-Naphthalenedisulfonic acid, 4-[(3-aminobenzoyl)amino]-5-hydroxy-; 70239-77-9; Azo dye intermediate J-acid derivative
EINECS	Contact for details

Quality Control

Our production of 4-[(3-Aminobenzoyl)Amino]-5-Hydroxynaphthalene-1,7-Disulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment, supporting compliance with global supply chain requirements.

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). The compound may be hygroscopic; keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulphated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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