Description

Naphthalene-2-Sulfonic Acid Hydrate is a versatile aromatic sulfonic acid derivative, primarily valued as a key intermediate in the synthesis of dyes, pigments, and optical brighteners. Its strong acidic character and specific aromatic structure make it a crucial building block for creating complex organic molecules with targeted properties. This compound is essential for manufacturers in the dyestuff, agrochemical, and pharmaceutical intermediate sectors seeking reliable and high-purity raw materials.

Application

• Dye and Pigment Intermediate: A fundamental precursor in the synthesis of azo dyes, acid dyes, and various organic pigments.
• Optical Brightener Production: Used in the manufacture of stilbene-based optical brightening agents for paper, textiles, and detergents.
• Agrochemical Synthesis: Serves as a key intermediate for certain herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Intermediate: Employed in the synthesis of specific active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Utilized in organic synthesis for introducing sulfonic acid groups and creating specialized surfactants or catalysts.
• Electroplating Additives: Can function as a brightening agent or additive in specific electroplating bath formulations.

Basic Information

Product Name	Naphthalene-2-Sulfonic Acid Hydrate
CAS No.	6036-00-6
Molecular Formula	C₁₀H₈O₃S·xH₂O
Molecular Weight	208.23 (Anhydrous basis)
Synonyms	2-Naphthalenesulfonic Acid Hydrate; 2-Naphthalenesulphonic Acid; β-Naphthalenesulfonic Acid; Naphthalene-β-sulfonic Acid; 2-Naphthylsulfonic Acid; NSC 4032; 2-Sulfonaphthalene; Iso-naphthalenesulfonic Acid
EINECS	227-913-3

Quality Control

Our Naphthalene-2-Sulfonic Acid Hydrate is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, water content, and impurity profiles 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). This material is hygroscopic (moisture-sensitive) and should be kept under conditions that minimize exposure to atmospheric humidity to prevent caking or degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (Titration)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 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.