Imports In 2002, Cocos (Keeling) Islands imported $13.1k in Sodium hydroxide (caustic soda) solid, becoming the 0th largest importer of Sodium hydroxide (caustic soda) solid in the world. At the same year, Sodium hydroxide (caustic soda) solid was the 0th most imported product in Cocos (Keeling) Islands. Cocos (Keeling) Islands imports Sodium hydroxide (caustic soda) solid primarily from: N/A.