Sulfonate

Sulfonate is a salt or ester of a sulfonic acid. It contains the functional group R-SO3−, where R is an organic group. Sulfonates are the conjugate base of sulfonic acids and are highly soluble in water. They are commonly used in detergents and surfactants due to their ability to form foams.

Structure and bonding

Sulfonates are typically organosulfur compounds. They are the conjugate bases of sulfonic acids, which possess the functional group R-SO2OH. The central sulfur atom is typically in its highest oxidation state of +6, and is double bonded to two oxygen atoms and single bonded to one oxygen and one carbon atom. The charge of the sulfonate ion is delocalized over the three oxygen atoms, contributing to the ion's stability.

Uses

Sulfonates are used in a variety of applications. They are a major component of detergents and surfactants due to their ability to form foams and emulsify greasy substances. They are also used in the production of dyes and colorants, as well as in the pharmaceutical industry for the production of certain types of drugs.

Health and environmental concerns

While sulfonates are generally considered safe for use, some types of sulfonates, such as perfluorooctanesulfonate (PFOS) and perfluorobutanesulfonate (PFBS), have been linked to health and environmental concerns. These substances are persistent in the environment and can accumulate in the human body, leading to potential health risks.

See also

• Sulfonic acid
• Detergent
• Surfactant

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