Description

Naphthalene-1,5-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble aromatic sulfonate derivative essential for advanced chemical synthesis. This compound serves as a critical intermediate and functional additive, valued for its ability to introduce sulfonate groups and modify solubility profiles in complex formulations. It is primarily required by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries for producing intermediates, azo dyes, and surface-active agents.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly azo dyes, where it provides solubility and color fastness.
• Pharmaceutical Synthesis: Used as a building block or sulfonating agent in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Intermediate: Employed in organic synthesis to introduce the naphthalenedisulfonate moiety, facilitating the creation of more complex sulfonated compounds.
• Surfactant and Dispersant Formulation: Acts as an anionic component or hydrotrope in specialty surfactant blends and dispersants for industrial applications.
• Electroplating Additive: Can function as a brightening agent or auxiliary in specific electroplating bath formulations.
• Research & Development: Serves as a standard or reagent in chemical research and analytical method development within academic and industrial laboratories.

Basic Information

Product Name	Naphthalene-1,5-Disulphonic Acid, Sodium Salt
CAS No.	14455-34-6
Molecular Formula	C10H6Na2O6S2
Molecular Weight	332.24 g/mol
Synonyms	1,5-Naphthalenedisulfonic Acid, Disodium Salt; Disodium 1,5-Naphthalenedisulfonate; Naphthalene-1,5-disulfonic Acid Disodium Salt; 1,5-NDS Disodium Salt; Acid Naphthalene-1,5-Disulphonate, Sodium Salt; Naphthalenedisulfonic Acid Sodium Salt (1,5-); Naphthalene-1,5-disulphonate
EINECS	238-426-6

Quality Control

Our Naphthalene-1,5-Disulphonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee consistency and 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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline 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
Sulfate (as SO4)	≤ 0.5%

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