Description

1,6-Naphthalenedisulfonic Acid Disodium Salt is a high-purity, water-soluble aromatic sulfonate salt with significant industrial utility. Its molecular structure makes it a versatile intermediate and functional additive, valued for its ability to modify surface properties and participate in synthesis. This compound is essential for manufacturers in the dye, polymer, and specialty chemical sectors seeking reliable performance and consistent quality. We supply this material to meet the stringent demands of global industrial and research applications.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, direct dyes, and fluorescent whitening agents.
• Polymer Industry: Used as a monomer or additive in the production of specialty polymers, including naphthalene sulfonate formaldehyde condensates for superplasticizers.
• Surfactant and Dispersant Synthesis: Serves as a building block for anionic surfactants and high-performance dispersing agents.
• Electroplating Additives: Functions as a brightening agent or auxiliary in electroplating baths to improve finish quality.
• Chemical Research: Employed as a standard or reagent in analytical chemistry and organic synthesis research.
• Pharmaceutical Intermediates: Potential use in the synthesis of certain sulfonated pharmaceutical compounds.

Basic Information

Product Name	1,6-Naphthalenedisulfonic Acid Disodium Salt
CAS No.	1655-43-2
Molecular Formula	C10H6Na2O6S2
Molecular Weight	332.24 g/mol
Synonyms	1,6-Naphthalenedisulfonic Acid Sodium Salt; Disodium 1,6-Naphthalenedisulfonate; 1,6-NDSA Disodium Salt; Naphthalene-1,6-disulfonic Acid Disodium Salt; Acid Blue 92 Intermediate; C.I. 13390; 1,6-NDS Na2
EINECS	216-759-1

Quality Control

Our 1,6-Naphthalenedisulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, confirming compliance with agreed-upon standards. Our quality commitment supports applications requiring high consistency, including pharmaceutical intermediates and high-performance chemical synthesis.

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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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