Description

5-Amino-2-Chloro-4-Methylbenzenesulfonic Acid is a key sulfonated aromatic amine intermediate with significant utility in advanced organic synthesis. Its molecular structure, featuring both an amino and a sulfonic acid group, makes it a versatile building block for creating complex, functional molecules. This compound is essential for manufacturers in the dye, pigment, and pharmaceutical industries seeking to develop products with specific coloristic or bioactive properties.

Application

• Dye and Pigment Intermediate: Primarily used as a crucial coupling component in the synthesis of azo dyes and organic pigments, contributing to color strength and fastness properties.
• Pharmaceutical Synthesis: Serves as a key starting material or intermediate in the production of specialty active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Manufacturing: Employed in the synthesis of certain herbicides and plant growth regulators that require a sulfonated aniline backbone.
• Chemical Research & Development: Used in academic and industrial R&D for exploring new synthetic pathways and creating novel sulfonated compounds.
• Functional Material Production: Acts as a monomer or modifier in the creation of specialty polymers, resins, and materials with ionic or hydrophilic characteristics.

Basic Information

Product Name	5-Amino-2-Chloro-4-Methylbenzenesulfonic Acid
CAS No.	83543-94-6
Molecular Formula	C7H8ClNO3S
Molecular Weight	221.66 g/mol
Synonyms	2-Chloro-4-methyl-5-aminobenzenesulfonic Acid; 2-Chloro-5-amino-p-toluenesulfonic Acid; 5-Amino-2-chloro-p-toluenesulfonic Acid; 2-Chloro-4-methylaniline-5-sulfonic Acid; 1-Amino-2-chloro-4-methyl-5-sulfonic acid benzene; CLT Acid; Benzenesulfonic acid, 5-amino-2-chloro-4-methyl-
EINECS	Contact for details

Quality Control

Our production of 5-Amino-2-Chloro-4-Methylbenzenesulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
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.