CAS 98-34-0

3-Chloro-4-methylbenzenesulfonic acid

Description:

3-Chloro-4-methylbenzenesulfonic acid, with the CAS number 98-34-0, is an aromatic sulfonic acid characterized by the presence of a sulfonic acid group (-SO3H) attached to a benzene ring that also features a chlorine atom and a methyl group as substituents. This compound typically appears as a white to light yellow solid and is soluble in water, making it useful in various chemical applications. It has a strong acidic nature due to the sulfonic acid group, which contributes to its reactivity and ability to act as a proton donor. The presence of the chlorine and methyl groups influences its chemical behavior, including its reactivity in electrophilic substitution reactions. 3-Chloro-4-methylbenzenesulfonic acid is often utilized in the synthesis of dyes, pharmaceuticals, and other organic compounds, and it serves as an important intermediate in organic chemistry. Safety precautions should be taken when handling this substance, as it can be corrosive and may cause irritation to skin and eyes.

Formula: C₇H₇ClO₃S

InChI: InChI=1S/C7H7ClO3S/c1-5-2-3-6(4-7(5)8)12(9,10)11/h2-4H,1H3,(H,9,10,11)

InChI key: InChIKey=UPMIEBBZKWZYEZ-UHFFFAOYSA-N

SMILES: S(=O)(=O)(O)C1=CC(Cl)=C(C)C=C1

Synonyms:

• p-Toluenesulfonic acid, 3-chloro-
• Benzenesulfonic acid, 3-chloro-4-methyl-
• 3-Chloro-p-toluenesulfonic acid
• 3-Chloro-4-methylbenzenesulfonic acid
• 2-Chlorotoluene-4-sulfonic acid