Butanesulfonic acid, also called butane-1-sulfonic acid, is a conjugate acid of butane-1 sulfonate. It’s alkyl group, butyl, ties directly to the sulfo functionality. It is often found in products used for pest control purposes. The molecular weight of butanesulfonic acid is 138.19 g/mol. It has a hydrogen bond donor count of one, a hydrogen bond acceptor count of three, and a rotatable bond count of three. It has an exact and monoisotopic mass of 138.035065 g/mol. The heavy atom count of butanesulfonic acid is 8. It also has a complexity of 130 and is a canonicalized compound. Butanesulfonic acid has a melting point of 4.64°F (-15.2°C) and a boiling point of 280.4°F (138°C). It is incompatible with potent oxidizing agents or bases. It should be treated as a harmful chemical when it contacts the skin or eyes. Other related compounds to butanesulfonic acid include acetylphosphate, butyric acid, and choline hydrogen sulfate.