98-69-1

Basic information

• Product Name: 4-Ethylbenzenesulfonic acid
• Synonyms: 4-ethyl-benzenesulfonicaci;p-ethyl-benzenesulfonicaci;phenylethane-p-sulfonate;P-ETHYLBENZENESULFONIC ACID;4-ETHYLBENZENESULFONIC ACID;p-ethylbenzenesulphonic acid;4-ETHYLBENZENESULFONIC ACID, TECH., 95%;4-ETHYLBENZENESULFONIC ACID TECH 95%
• CAS NO: 98-69-1
• Molecular Formula: C₈H₁₀O₃S
• Molecular Weight: 186.23
• EINECS: 202-693-7
• Product Categories: Organic Building Blocks;Sulfonic/Sulfinic Acids;Sulfur Compounds
• Mol File: 98-69-1.mol
• Article Data: 6

Chemical Properties

• Flash Point: >230 °F
• Appearance: /
• Density: 1.229 g/mL at 25 °C(lit.)
• Refractive Index: n20/D 1.5331(lit.)
• PKA: -0.45±0.50(Predicted)
• Stability: Stability Combustible. Incompatible with strong oxidizing agents, strong bases.
• CAS DataBase Reference: 4-Ethylbenzenesulfonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Ethylbenzenesulfonic acid(98-69-1)
• EPA Substance Registry System: 4-Ethylbenzenesulfonic acid(98-69-1)

Safety Data

• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-27-28-36/37/39-45
• RIDADR: UN 2586 8/PG 3
• WGK Germany: 3
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 98-69-1(Hazardous Substances Data)

Usage

Uses

4-Ethylbenzenesulfonic acid was used to dope high conducting polypyrrole thin films.

InChI:InChI=1/C8H10O3S/c1-2-7-3-5-8(6-4-7)12(9,10)11/h3-6H,2H2,1H3,(H,9,10,11)

Upstream product

• 100-41-4 ethylbenzene 
• 16712-69-9 p-ethylbenzenesulfonyl chloride 
• 138-29-4 3-ethyl-benzenesulfonic acid 

Downstream Products

• 100-41-4 ethylbenzene 
• 123-07-9 4-Ethylphenol 
• 99-96-7 4-hydroxy-benzoic acid 
• 65-85-0 benzoic acid 
• 25309-64-2 4-ethyl-1-iodobenzene 

Relevant articles and documents

Smectic liquid crystals from supramolecular guanidinium alkylbenzenesulfonates

A homologous series of guanidinium alkylbenzenesulfonates from ethyl to tetradecyl were synthesized and characterised. Their thermotropic polymorphism was investigated by polarizing optical microscopy, differential scanning calorimetry, and dilatometry. The structure of the smectic liquid crystal phases obtained at high temperature with the compounds from octyl to tetradecyl was analysed by X-ray diffraction. The supramolecular assembling of the ionic species inside the smectic layers was investigated by infrared spectroscopy.

Mass Spectral Studies of Alkylbenzenesulphonic Acids Through Their S-Benzylisothiouronium Salts

The mass spectra of alkylbenzenesulphonic acids in the form of their S-benzylisothiouronium salts have been studied.These S-benzylisothiouronium salts dissociated into two parent reactant ions: (i) alkylbenzenesulphonic acid and (ii) S-benzylisothiourea.The characteristic fragmentation patterns of alkylbenzenesulphonic acids (0-5 substituted alkyls) were studied and compared with those of the parent ion peak hydrocarbons.The intensity of the molecular decreased with the increase in the molecular weight of the sulphonic acids.Desulphonation as well as loss of the alkyl group was observed in all the spectra.Migration of the alkyl group from S to 0, followed by degradation, was also observed in all the spectra studied.

NATHAN-BAKER EFFECTS IN THE HETEROGENEOUS SULFONATION OF ALKYLBENZENES

-