Description

Sodium 4-Hydroxy-7-[(3-Nitrobenzoyl)Amino]Naphthalene-2-Sulphonate is a specialized organic intermediate and dye precursor of significant commercial importance. Its value lies in its precise molecular structure, which serves as a key building block for synthesizing high-performance colorants and functional materials. This product is essential for manufacturers in the dyestuff, pigment, and specialty chemical industries seeking reliable, high-purity intermediates for advanced applications.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical coupling component in the synthesis of high-value azo dyes, particularly for applications requiring specific color fastness and hue.
• Functional Dye Synthesis: Used in the production of specialized dyes for textiles, leather, and paper, where the nitro and sulphonate groups impart specific solubility and bonding properties.
• Research & Development Chemical: Employed in organic synthesis laboratories for developing novel chromophores, fluorescent markers, or photoactive compounds.
• Specialty Chemical Manufacturing: Acts as a precursor for creating complex molecules used in niche industrial applications, including imaging and sensing technologies.

Basic Information

Product Name	Sodium 4-Hydroxy-7-[(3-Nitrobenzoyl)Amino]Naphthalene-2-Sulphonate
CAS No.	94232-36-7
Molecular Formula	C17H11N2NaO7S
Molecular Weight	410.34 g/mol
Synonyms	7-[(3-Nitrobenzoyl)amino]-4-hydroxy-2-naphthalenesulfonic acid sodium salt; Sodium 7-[(3-nitrobenzoyl)amino]-4-hydroxy-2-naphthalenesulfonate; 4-Hydroxy-7-[(3-nitrobenzoyl)amino]-2-naphthalenesulfonic acid sodium salt; 2-Naphthalenesulfonic acid, 7-[(3-nitrobenzoyl)amino]-4-hydroxy-, sodium salt (1:1); Azo dye intermediate K; Acid dye precursor
EINECS	Contact for details

Quality Control

Our Sodium 4-Hydroxy-7-[(3-Nitrobenzoyl)Amino]Naphthalene-2-Sulphonate is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent in-house specifications, which typically include identity confirmation, assay (purity), and control of key impurities. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical 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). Keep away from strong oxidizing agents and incompatible materials. The product may be light-sensitive; prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulphated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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