"caustic soda" in German caustic soda Ätznatron Natronlauge Detailed translations for "caustic soda" caustic soda 1. general caustic soda das Ätznatron{neuter} 2. chemistry caustic soda(also: soda lye, caustic soda solution) die Natronlauge{feminine} English synonyms for "caustic soda" caustic soda {n} sodium hydroxide