Imports In 2022, Saint Martin imported $444 in Sodium hydroxide (caustic soda) in aqueous solution, becoming the 194th largest importer of Sodium hydroxide (caustic soda) in aqueous solution in the world. At the same year, Sodium hydroxide (caustic soda) in aqueous solution was the 2016th most imported product in Saint Martin. Saint Martin imports Sodium hydroxide (caustic soda) in aqueous solution primarily from: France ($378) and Netherlands ($66).