Description

1-Naphthalenesulfonic Acid is a versatile aromatic sulfonic acid derivative, serving as a critical intermediate in the synthesis of dyes, pigments, and other fine chemicals. Its value lies in its ability to act as a solubilizing agent and a key building block for creating more complex sulfonated structures. This product is essential for manufacturers in the dye and pigment, agrochemical, and pharmaceutical intermediate industries, where consistent quality and reliable supply are paramount for production continuity.

Application

• Dye and Pigment Intermediate: A fundamental precursor in the manufacture of azo dyes, acid dyes, and other colorants.
• Agrochemical Synthesis: Used as a key intermediate in the production of certain herbicides and plant growth regulators.
• Pharmaceutical Intermediates: Serves as a building block in the synthesis of specific active pharmaceutical ingredients (APIs).
• Surfactant and Dispersant Production: Acts as a starting material for creating naphthalene-based sulfonate surfactants and dispersing agents.
• Chemical Research & Development: Employed in organic synthesis laboratories for developing new sulfonated compounds.
• Concrete Admixtures: Can be used in the formulation of certain water-reducing and plasticizing additives for concrete.

Basic Information

Product Name	1-Naphthalenesulfonic Acid
CAS No.	85-47-2
Molecular Formula	C10H8O3S
Molecular Weight	208.23 g/mol
Synonyms	1-Naphthalenesulphonic Acid; α-Naphthalenesulfonic Acid; Naphthalene-1-sulfonic Acid; 1-Naphthylsulfonic Acid; α-Naphthylsulfonic Acid; 1-Naphthalenesulfonic acid (8CI); NSC 402124; EINECS 201-609-3
EINECS	201-609-3

Quality Control

Our 1-Naphthalenesulfonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing the results is provided with each shipment to guarantee traceability and compliance with your quality requirements.

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); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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