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Benzenesulfonic acid (conjugate base benzenesulfonate) is an organosulfur compound with the formula C 6 H 6 O 3 S.It is the simplest aromatic sulfonic acid.It forms white deliquescent sheet crystals or a white waxy solid that is soluble in water and ethanol, slightly soluble in benzene and insoluble in nonpolar solvents like diethyl ether.
Sodium benzenesulfonate is an organic compound with the formula C 6 H 5 SO 3 Na.It is white, water-soluble solid, It is produced by the neutralization benzenesulfonic acid with sodium hydroxide.
An early method for producing phenol involved the base hydrolysis of sodium benzenesulfonate, which can be generated readily from benzene. [15] C 6 H 5 SO 3 Na + NaOH → C 6 H 5 OH + Na 2 SO 3. The conditions for this reaction are harsh, however, requiring 'fused alkali' or molten sodium hydroxide at 350 °C for benzenesulfonic acid itself. [16]
In the most common route benzene is alkylated by long chain monoalkenes (e.g. dodecene) using hydrogen fluoride as a catalyst. [9] The purified dodecylbenzenes (and related derivatives) are then sulfonated with sulfur trioxide to give the sulfonic acid. [10] The sulfonic acid is subsequently neutralized with sodium hydroxide. [1]
By measuring the pK a at various ionic strengths and extrapolating to zero ionic strength, the pK a of phenylsulfinic acid was determined to be 2.76. [1] This makes phenylsulfinic acid a stronger acid than its corresponding carboxylic acid, benzoic acid (pK a = 4.2), but weaker than its corresponding sulfonic acid, benzenesulfonic acid (pK a ...
p-Toluenesulfonic acid (PTSA, pTSA, or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH 3 C 6 H 4 SO 3 H. It is a white extremely hygroscopic solid that is soluble in water, alcohols, and other polar organic solvents. [6] The CH 3 C 6 H 4 SO 2 group is known as the tosyl group and is often abbreviated as Ts or Tos.
Mustard oil is a commonplace ingredient in northern Indian cooking, but has been found to contain high levels of erucic acid, which has been found to cause heart disease in animals. Related ...
Chlorosulfuric acid is also an effective agent: C 6 H 6 + HSO 3 Cl → C 6 H 5 SO 3 H + HCl. In contrast to aromatic nitration and most other electrophilic aromatic substitutions this reaction is reversible. Sulfonation takes place in concentrated acidic conditions and desulfonation is the mode of action in a dilute hot aqueous acid.