Chemical synthesis- Intermediate in making dyes pharmaceuticals and resins. Catalyst- Used as an acid catalyst in organic reactions (e.g. esterification). Detergents- Helps produce surfactants and cleaning agents. Industrial processes- Used in polymer and specialty chemical production.

Provides strong acidic conditions for reactions. Acts as a sulfonating agent or intermediate. Improves efficiency of chemical manufacturing processes.

Organic sulfonic acid with a benzene ring a methyl group and a sulfonic acid group. Strong acid highly soluble in water and polar solvents.