Description

Sodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble aromatic sulfonate salt primarily used as a key intermediate in the synthesis of specialized dyes and pigments. This compound matters for its role in producing colorants with specific light-fastness and hue properties, which are critical for demanding industrial applications. It is needed by manufacturers in the dye and pigment industry, as well as by research and development laboratories focusing on advanced organic synthesis and material science.

Application

• Primary Intermediate for the synthesis of azo dyes and acid dyes.
• Precursor Molecule in the manufacture of specialized pigments for inks and coatings.
• Research Chemical for developing novel chromophores and fluorescent markers.
• Textile Dye Manufacturing, contributing to dyes used on nylon, silk, and wool.
• Analytical Reagent potential in colorimetric detection methods.

Basic Information

Product Name	Sodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	67786-17-8
Molecular Formula	C17H13N2NaO5S
Molecular Weight	380.35 g/mol
Synonyms	7-[(4-Aminobenzoyl)amino]-4-hydroxynaphthalene-2-sulfonic acid sodium salt; 4-Amino-N-(4-hydroxy-7-sulfo-2-naphthyl)benzamide sodium salt; Sodium 4-amino-N-(4-hydroxy-7-sulfo-2-naphthyl)benzamide; 2-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-4-hydroxy-, monosodium salt; C.I. 18050; Acid Orange 33 intermediate; Azoic diazo component 13 intermediate.
EINECS	Contact for details

Quality Control

Our Sodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC and spectrophotometric methods, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, assay, 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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