Description

2-Amino-5-Chloro-4-Methylbenzenesulfonic Acid is a key sulfonated aromatic amine intermediate with significant commercial importance. Its molecular structure makes it a versatile building block for the synthesis of more complex organic compounds, particularly dyes and pigments. This product is essential for manufacturers in the chemical synthesis, agrochemical, and specialty dye industries seeking reliable, high-purity raw materials.

Application

• Primary Intermediate for Dyes and Pigments: Serves as a crucial precursor in the manufacture of azo dyes, acid dyes, and other colorants, providing the sulfonic acid group for solubility and the amino group for diazotization.
• Agrochemical Synthesis: Used in the production of certain herbicides and pesticides where its benzenesulfonic acid derivative structure is incorporated into the active ingredient.
• Pharmaceutical Intermediate: Acts as a building block in the synthesis of specific sulfa drug analogs and other pharmacologically active molecules.
• Chemical Research & Development: Employed in organic synthesis laboratories for the development of new sulfonated compounds and functional materials.
• Corrosion Inhibitor Formulations: Can be utilized in the development of specialty corrosion inhibitors for industrial water treatment systems.

Basic Information

Product Name	2-Amino-5-Chloro-4-Methylbenzenesulfonic Acid
CAS No.	88-53-9
Molecular Formula	C7H8ClNO3S
Molecular Weight	221.66 g/mol
Synonyms	4-Amino-2-Chloro-5-Methylbenzenesulfonic Acid; 5-Chloro-4-Methyl-2-aminobenzenesulfonic Acid; 2-Amino-5-chloro-p-toluenesulfonic Acid; CLT Acid; 6-Chloro-3-methylaniline-4-sulfonic Acid; Benzenesulfonic acid, 2-amino-5-chloro-4-methyl-; 1-Amino-2-chloro-5-methyl-4-sulfobenzene
EINECS	201-839-7

Quality Control

Our 2-Amino-5-Chloro-4-Methylbenzenesulfonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) documenting results for assay, related substances, and other critical parameters is provided with every shipment to guarantee traceability and compliance.

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 tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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