Description

4-Ethylbenzenesulfonic Acid (CAS No. 98-69-1) is a high-purity organic sulfonic acid with the molecular formula C₈H₁₀O₃S. This compound, also known by its IUPAC name 4-ethylbenzenesulfonic acid, is a versatile reagent widely used in organic synthesis, catalysis, and material science applications. Its structure features an ethyl group para to the sulfonic acid functionality, enhancing its solubility in polar solvents and reactivity in electrophilic substitutions.

Our product is rigorously tested to ensure >98% purity (HPLC/GC) and is supplied as a white to off-white crystalline powder. It is packaged under inert conditions to maintain stability and prevent moisture absorption. Ideal for researchers in pharmaceuticals, agrochemicals, and polymer chemistry, this compound serves as a key intermediate in the synthesis of dyes, surfactants, and ion-exchange resins.

Key Features:

• High purity (>98%) with detailed Certificate of Analysis
• Stable under recommended storage conditions (2-8°C, dry)
• Compatible with a wide range of organic transformations

Properties

• CAS Number: 98-69-1
• Complexity: 219
• IUPAC Name: 4-ethylbenzenesulfonic acid
• InChI: InChI=1S/C8H10O3S/c1-2-7-3-5-8(6-4-7)12(9,10)11/h3-6H,2H2,1H3,(H,9,10,11)
• InChI Key: BRIXOPDYGQCZFO-UHFFFAOYSA-N
• Exact Mass: 186.03506535
• Molecular Formula: C8H10O3S
• Molecular Weight: 186.23
• SMILES: CCC1=CC=C(C=C1)S(=O)(=O)O
• Topological: 62.8
• Monoisotopic Mass: 186.03506535
• Physical Description: Liquid
• Synonyms: 4-ETHYLBENZENESULFONIC ACID, 98-69-1, p-Ethylbenzenesulfonic acid, Phenylethane-p-sulfonate, Benzenesulfonic acid, 4-ethyl-, Benzenesulfonic acid, p-ethyl-, XIG6VCJ1KC, p-Ethylbenzenesulphonic acid, Benzenesulfonic acid, ethyl-, ETHYLBENZENESULFONIC ACID, DTXSID4046571, HSDB 5320, EINECS 202-693-7, DTXCID2026571, EINECS 260-690-6, Phenylethanepsulfonate, pEthylbenzenesulfonic acid, Benzenesulfonic acid, pethyl, Benzenesulfonic acid, 4ethyl, DTXSID201015797, 202-693-7, 4-Ethylbenzenesulfonicacid, NCGC00166239-01, UNII-XIG6VCJ1KC, MFCD00009800, 4-ethylbenzenesulonic acid, 4-ethylphenylsulfonic acid, SCHEMBL93796, 4-Ethylbenzenesulfonic acid #, SCHEMBL330720, 4-ethylbenzene-1-sulfonic acid, SCHEMBL1156205, SCHEMBL7739850, CHEMBL3188767, CHEBI:176767, Tox21_112365, AKOS009031461, CAS-98-69-1, AS-81433, DB-057742, CS-0069969, NS00040539, E83799, 4-Ethylbenzenesulfonic acid, technical grade, 95%, Q27293854, 2-[(5-bromo-2-hydroxy-phenyl)methyl-[2-[(5-bromo-2-hydroxy-phenyl)methyl-(carboxymethyl)amino]ethyl]amino]acetic acid

Application

4-Ethylbenzenesulfonic acid is primarily employed as an acid catalyst in esterification and condensation reactions. It finds use in the synthesis of specialty chemicals, including surfactants and dye intermediates, due to its strong sulfonic acid group. Researchers also utilize it as a dopant in conductive polymers and as a precursor for sulfonated materials in ion-exchange membranes.

Safety and Hazards

GHS Hazard Statements

• H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H318 (100%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

• P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P405, and P501

Hazard Classes and Categories

• Skin Corr. 1B (100%)
• Eye Dam. 1 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.