Description

Naphthalene-2-Sulfonic Acid is a versatile aromatic sulfonic acid derivative, serving as a critical intermediate in organic synthesis. Its primary value lies in its strong acidity and solubility in organic solvents, making it an effective catalyst and building block for more complex molecules. This compound is essential for manufacturers in the dye, pharmaceutical, and agrochemical industries seeking reliable, high-purity intermediates for their production processes.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other colorants.
• Pharmaceutical Synthesis: Used as a building block and sulfonating agent in the manufacture of various active pharmaceutical ingredients (APIs).
• Agrochemical Production: Employed in the synthesis of herbicides, pesticides, and other crop protection agents.
• Catalyst and Acidulant: Functions as an acid catalyst in organic reactions, including esterification and alkylation.
• Chemical Research & Development: Serves as a standard reagent and intermediate in laboratory-scale organic synthesis.
• Surfactant and Detergent Intermediate: Can be used to produce sulfonated surfactants for industrial cleaning formulations.

Basic Information

Product Name	Naphthalene-2-Sulfonic Acid
CAS No.	120-18-3
Molecular Formula	C10H8O3S
Molecular Weight	208.23 g/mol
Synonyms	2-Naphthalenesulfonic Acid; β-Naphthalenesulfonic Acid; 2-Naphthylsulfonic Acid; Naphthalene-β-sulfonic Acid; Isonaphthalenesulfonic Acid; NSC 402124; 2-Sulfonaphthalene; 2-Naphthalene Sulphonic Acid
EINECS	204-375-3

Quality Control

Our Naphthalene-2-Sulfonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and consistency. Certificates of Analysis (COA) documenting key parameters are provided to guarantee supply reliability and product integrity for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is 15-25°C. The product is a strong acid/organic solvent; handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.