Description

1,5-Naphthalenedisulfonic Acid, Disodium Salt Hydrate, 95% is a high-purity, water-soluble organic salt derived from naphthalene. This compound is valued for its role as a versatile intermediate and functional additive in advanced chemical synthesis. It is primarily needed by manufacturers in the dye, pharmaceutical, and specialty chemical industries for producing high-performance materials and active ingredients.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, reactive dyes, and optical brighteners.
• Pharmaceutical Synthesis: Serves as a sulfonating agent and intermediate in the production of certain APIs (Active Pharmaceutical Ingredients).
• Electroplating Additive: Used as a brightening agent and leveler in electroplating baths for metal finishing.
• Concrete Admixture: Functions as a raw material in the synthesis of high-range water-reducing superplasticizers.
• Textile Auxiliary: Employed in processes for dye leveling and as a dispersing agent.
• Research & Development: Utilized in academic and industrial R&D for organic synthesis and material science projects.

Basic Information

Product Name	1,5-Naphthalenedisulfonic Acid, Disodium Salt Hydrate, 95%
CAS No.	207569-02-6
Molecular Formula	C₁₀H₆Na₂O₇S₂·xH₂O
Molecular Weight	332.24 (Anhydrous basis)
Synonyms	Disodium 1,5-Naphthalenedisulfonate Hydrate; 1,5-NDSA Disodium Salt; Naphthalene-1,5-disulfonic Acid Disodium Salt; 1,5-Naphthalenedisulfonic Acid Sodium Salt; Dinaphthionate; Dinaphthionic Acid Disodium Salt; 1,5-NDS Na₂; NSC 403796
EINECS	Contact for details

Quality Control

Our 1,5-Naphthalenedisulfonic Acid, Disodium Salt Hydrate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets the declared 95% minimum purity specification and consistent performance. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture which may affect quality.

Specification

Item	Specification
Appearance	White to off-white powder or crystals
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, colorless solution

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