Description

4-Acetamido-5-Hydroxynaphthalene-1,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble naphthalene derivative that serves as a critical advanced intermediate in organic synthesis. Its value lies in its bifunctional structure, containing both acetamido and hydroxyl groups on a disulfonated aromatic backbone, making it a versatile precursor for creating complex molecules. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research and development laboratories focused on specialty chemical synthesis.

Application

• Primary Intermediate for Dyes and Pigments: A key building block in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for coloring wool, silk, and nylon.
• Chemical Synthesis Reagent: Used in the preparation of more complex naphthalene-based compounds for various industrial applications.
• Research & Development: Employed in academic and industrial R&D for studying sulfonation reactions and developing new chromophores.
• Specialty Chemical Manufacturing: Acts as a precursor in the production of optical brighteners and other functional chemicals.

Basic Information

Product Name	4-Acetamido-5-Hydroxynaphthalene-1,7-Disulphonic Acid, Sodium Salt
CAS No.	84000-85-1
Molecular Formula	C₁₂H₁₀NNa₂O₈S₂
Molecular Weight	423.31 g/mol
Synonyms	4-Acetamido-5-hydroxynaphthalene-1,7-disulfonic acid disodium salt; 5-Hydroxy-4-acetamido-1,7-naphthalenedisulfonic acid disodium salt; 1,7-Naphthalenedisulfonic acid, 4-(acetylamino)-5-hydroxy-, disodium salt; N-Acetyl H acid disodium salt; H acid derivative; Acid Black 1 intermediate; C.I. 20470 intermediate
EINECS	Contact for details

Quality Control

Our 4-Acetamido-5-Hydroxynaphthalene-1,7-Disulphonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and 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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and handling.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated 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.