2,5-Dichloro-4-sulfobenzenediazonium, hydroxide inner salt 2,5-Dichloro-4-sulphonatobenzenediazonium 69121-21-7 Benzenediazonium 2,5-dichloro-4-sulfo-, hydroxide, inner salt Benzenediazonium, 2,5-dichloro-4-sulfo-, inner salt EINECS 273-883-5