C6H5SO2OH

C6H5SO2OH, commonly known as Phenolsulfonic acid, is a chemical compound with the formula C6H5SO2OH. It is a derivative of phenol, with a sulfonic acid group (-SO2OH) attached to the aromatic ring. Phenolsulfonic acid is a strong acid, which means it readily donates protons in aqueous solution.

The compound is used in various industrial applications. It is a key intermediate in the synthesis of dyes and pigments. In the textile industry, it is used as a mordant, a substance that sets dyes and helps them adhere to fibers. In the pharmaceutical industry, it is used as a starting material for the synthesis of certain drugs.

Phenolsulfonic acid is also used in the production of explosives and propellants. It is a component of certain types of smokeless powder, which is used in firearms and ammunition. However, its use in this context is highly regulated due to safety concerns.

Phenolsulfonic acid is a hazardous substance and should be handled with care. It can cause skin and eye irritation, and in severe cases, it can be harmful if inhaled or ingested. Proper personal protective equipment should be used when handling this compound.

The compound is stable under normal temperatures and pressures, but it can decompose under high heat, releasing toxic fumes. It is soluble in water and most organic solvents, but it is insoluble in hydrocarbons.