Description

5-Chloronaphthalene-1-Sulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in advanced organic synthesis. Its value lies in the unique combination of a chlorinated naphthalene backbone with a strongly acidic sulfonic acid group, enabling precise chemical modifications. This compound is essential for manufacturers and R&D chemists in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in the development of naphthalene-based compounds.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where the chloronaphthalene moiety imparts specific biological activity.
• Dye and Pigment Manufacturing: Serves as a precursor for synthesizing specialized azo dyes, acid dyes, and pigments, contributing to color fastness and specific hue properties.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new organic reactions and creating complex molecular architectures.
• Surfactant and Detergent Industry: Potential intermediate for producing specialized anionic surfactants with naphthalene-based hydrophobic groups.
• Polymer Modification: Can be used to introduce sulfonic acid groups into polymer chains, modifying properties like hydrophilicity and ion-exchange capacity.

Basic Information

Product Name	5-Chloronaphthalene-1-Sulfonic Acid
CAS No.	89108-43-0
Molecular Formula	C10H7ClO3S
Molecular Weight	242.68 g/mol
Synonyms	5-Chloro-1-naphthalenesulfonic Acid; 1-Naphthalenesulfonic acid, 5-chloro-; 5-Chloronaphthalene-1-sulphonic Acid; NSC 403119; 5-Chloro-1-naphthalenesulphonic Acid
EINECS	Contact for details

Quality Control

Every batch of 5-Chloronaphthalene-1-Sulfonic Acid is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemical intermediates. Comprehensive analytical testing, including HPLC for purity and identity confirmation, is performed. A detailed Certificate of Analysis (COA) is provided with each shipment to guarantee consistent quality and specification adherence.

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 product is hygroscopic (moisture-sensitive) and should be kept under dry conditions. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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