Synonyms: Sulfurous acid, sodium salt;Natrium sulfurosum;disodium sulfite heptahydrate;disodium salt;Sodium sulfite, exsiccated;Sodium sulfite anhydrous;Sulfurous acid, sodium salt (1:2);Sulfurous acid, sodium salt, heptahydrate;Sodium sulfite ,anhydrous;Sodium Sulphite/Sodium Sulphite anhydrous;Natrii sulphis;Sodium sulfite heptahydrate (2:1:7);sodium; sulfurous acid;Natriumsulfid [German];Sulphurous acid, sodium salt;Sodium sulfite solution;EPA Pesticide Chemical Code 078203;Sulftech;Sodium sulfite heptahydrate;Exsiccated sodium sulfite;Sodium sulfite (Na2SO3);Disodium sulfite (Na2SO3);Sulfurous acid,compounds,disodium salt;anhydrous sodium sulphite;Natriumsulfit [German];