Sodium phenolate trihydrate is widely used in organic synthesis as a reagent for various chemical reactions, particularly in the production of pharmaceuticals and agrochemicals. It serves as a key intermediate in the synthesis of phenolic compounds, which are essential in manufacturing drugs like analgesics and antiseptics.

In the polymer industry, it acts as a catalyst or stabilizer in the production of certain resins and plastics, enhancing their properties and durability. Additionally, it is employed in the formulation of industrial disinfectants and cleaning agents due to its strong antimicrobial properties.

In analytical chemistry, sodium phenolate trihydrate is utilized as a pH adjuster or buffer in laboratory experiments, ensuring optimal conditions for specific reactions. Its ability to neutralize acidic environments makes it valuable in wastewater treatment processes, where it helps in the removal of harmful pollutants.

Overall, its versatility makes it a crucial component in various industrial and scientific applications.