Description

3-Amino-4-Ethylbenzenesulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical intermediate in fine chemical synthesis. Its value lies in its bifunctional structure, featuring both an amino and a sulfonic acid group, which makes it a versatile building block for creating more complex molecules. This compound is essential for manufacturers in the dyestuff, pharmaceutical, and agrochemical industries who require high-purity intermediates for coupling reactions and the synthesis of active ingredients.

Application

• Dyestuff and Pigment Intermediate: A key precursor in the synthesis of azo dyes and organic pigments, contributing to color fastness and solubility properties.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Employed in the synthesis of herbicides, fungicides, and other crop protection chemicals.
• Chemical Research & Development: Serves as a valuable reagent in organic synthesis for creating novel sulfonated compounds.
• Liquid Crystal and Electronic Materials: Can be utilized in the production of specialized materials for electronic applications.
• Corrosion Inhibitor Formulation: Acts as a component in formulations designed to protect metal surfaces.

Basic Information

Product Name	3-Amino-4-Ethylbenzenesulphonic Acid
CAS No.	3694-83-5
Molecular Formula	C8H11NO3S
Molecular Weight	201.24 g/mol
Synonyms	4-Ethyl-3-aminobenzenesulfonic acid; 3-Amino-4-ethylbenzenesulfonic acid; 2-Amino-4-ethylbenzenesulfonic acid; 4-Ethyl-m-aminobenzenesulfonic acid; 1-Amino-2-ethyl-5-sulfobenzene; 5-Amino-4-ethylbenzenesulfonic acid; Benzenesulfonic acid, 3-amino-4-ethyl-
EINECS	223-019-7

Quality Control

Our 3-Amino-4-Ethylbenzenesulphonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and fine chemical applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 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.