Description

4-(Ethylamino)Benzenesulfonic Acid is a specialized organic sulfonic acid derivative that serves as a key intermediate in the synthesis of various high-value chemical products. Its molecular structure, featuring both an ethylamino group and a sulfonic acid moiety, makes it a versatile building block for creating dyes, pigments, and functional materials. This compound is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop new compounds with specific properties.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes, acid dyes, and other colorants for textiles, inks, and plastics.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or aniline-based structures.
• Agrochemical Formulations: Serves as an intermediate in the production of certain herbicides, fungicides, and plant growth regulators.
• Chemical Research & Development: Employed in organic synthesis for introducing sulfonic acid groups into target molecules, modifying solubility and reactivity.
• Functional Material Production: Used in the manufacture of optical brighteners, liquid crystal materials, and other specialty chemicals.
• Corrosion Inhibitor Component: Can be utilized in the formulation of specialty corrosion inhibitors for industrial applications.

Basic Information

Product Name	4-(Ethylamino)Benzenesulfonic Acid
CAS No.	42293-35-6
Molecular Formula	C8H11NO3S
Molecular Weight	201.24 g/mol
Synonyms	N-Ethyl-4-aminobenzenesulfonic Acid; p-(Ethylamino)benzenesulfonic Acid; 4-(Ethylamino)benzenesulfonate; Benzenesulfonic acid, 4-(ethylamino)-; 4-Ethylaminobenzenesulfonic Acid; N-Ethylaniline-4-sulfonic Acid; Ethyl-p-aminobenzenesulfonate
EINECS	Contact for details

Quality Control

Our production of 4-(Ethylamino)Benzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. Certificates of Analysis (COA) detailing all test results are provided and available upon request, supporting your quality assurance and regulatory compliance 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 tightly sealed after opening to prevent absorption of atmospheric moisture. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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