Imports In 2019, Saint Martin imported $8.43k in Potassium hydroxide (caustic potash), becoming the 0th largest importer of Potassium hydroxide (caustic potash) in the world. At the same year, Potassium hydroxide (caustic potash) was the 0th most imported product in Saint Martin. Saint Martin imports Potassium hydroxide (caustic potash) primarily from: N/A.