3,5-Dichloro-2-hydroxybenzenesulfonic acid sodium salt CAS:54970-72-8

3,5-Dichloro-2-hydroxybenzenesulfonic acid sodium salt is commonly used as a reagent in the synthesis of dyes. It can be utilized in the sulfonation reaction to introduce sulfonic acid groups onto aromatic compounds, which is an important step in the production of dyes and pigments. The presence of chlorine and hydroxyl groups in this compound allows it to selectively react with specific functional groups.

Additionally, it can be used as a pH-adjusting reagent, as it is a strong acid. It can be employed to lower the pH of a solution or as a buffer for maintaining pH in certain chemical or biological reactions.