The molecule is a Good's buffer substance, pKa = 7.15 at 20 鈩? It is a BES and an amino sulfonic acid. It is a conjugate acid of a 2-[bis(2-hydroxyethyl)amino]ethanesulfonate. It is a tautomer of a 2-[bis(2-hydroxyethyl)ammonio]ethanesulfonate.
2-[bis(2-hydroxyethyl)amino]ethanesulfonic acid