Description

Disodium 4-(Benzoylamino)-5-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble naphthalene derivative with significant commercial utility. This compound serves as a critical intermediate and functional additive in advanced manufacturing processes, valued for its consistent performance and quality. It is primarily required by industries involved in the synthesis of dyes, pigments, and specialty chemicals, where precise molecular structure is paramount for product performance.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, reactive dyes, and high-performance pigments for textiles, leather, and inks.
• Chemical Synthesis: Used as a building block for creating more complex organic molecules in pharmaceutical and agrochemical research.
• Analytical Reagent: Employed in laboratory settings as a reagent or standard for colorimetric analysis and other chemical detection methods.
• Functional Additive: Can act as a dispersing agent or stabilizer in certain formulations within the coatings and polymer industries.

Basic Information

Product Name	Disodium 4-(Benzoylamino)-5-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	5045-22-7
Molecular Formula	C17H13NNa2O8S2
Molecular Weight	477.39 g/mol
Synonyms	4-(Benzoylamino)-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; 5-Hydroxy-4-(phenylcarbonyl)amino]-2,7-naphthalenedisulfonic acid disodium salt; C.I. 18050; Acid Yellow 76; Benzenesulfonic acid, 4-[[4-[(benzoylamino)-5-hydroxy-2,7-disulfo-1-naphthalenyl]azo]-, disodium salt (related azo compound); Disodium 4-benzamido-5-hydroxynaphthalene-2,7-disulphonate
EINECS	225-730-6

Quality Control

Our Disodium 4-(Benzoylamino)-5-Hydroxynaphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and composition. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear, yellow solution

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