Description

1,4-Naphthalenedisulfonic Acid is a versatile aromatic sulfonic acid derivative, serving as a critical intermediate in the synthesis of dyes, pigments, and specialty chemicals. Its disulfonic acid structure provides excellent water solubility and reactivity, making it a valuable building block for creating more complex functional molecules. This compound is essential for manufacturers in the dye, pharmaceutical, and agrochemical industries seeking reliable, high-purity intermediates.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, direct dyes, and fluorescent brightening agents.
• Pharmaceutical Synthesis: Used as a building block or sulfonating agent in the production of certain active pharmaceutical ingredients (APIs).
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, pesticides, and other crop protection agents.
• Chemical Research & Development: Serves as a valuable reagent in organic synthesis and material science research.
• Surfactant and Detergent Industry: Can be used to produce specialized surfactants due to its hydrophilic sulfonic acid groups.
• Electroplating Additives: Functions as a brightening agent or complexing agent in certain electroplating baths.

Basic Information

Product Name	1,4-Naphthalenedisulfonic Acid
CAS No.	46859-22-7
Molecular Formula	C₁₀H₈O₆S₂
Molecular Weight	288.30 g/mol
Synonyms	1,4-Naphthalenedisulfonic Acid; Naphthalene-1,4-disulfonic Acid; 1,4-NDSA; 1,4-Naphthalene Disulphonic Acid; 1,4-Dihydroxynaphthalene-1,4-disulfonic Acid (tautomer); 4,8-Disulfonaphthalene-1-ol (tautomer); NSC 403754
EINECS	Contact for details

Quality Control

Our 1,4-Naphthalenedisulfonic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity and performance. Certificates of Analysis (COA) detailing assay, identity, and impurity profiles are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent caking or decomposition. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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