hydrogensulfite mutagen sodium hydrogensulfite E222 sodium bisulphite E 222 sulfurous acid, monosodium salt sodium hydrogensulfite NaHSO3 saures Natriumsulfit primaeres Natriumsulfit sodium hydrogen sulfite hydrogen sulfite sodium sulfurous acid sodium salt sodium bisulfite sulfurous acid, sodium salt (1:1) Natriumhydrogensulfit Natriumbisulfit sodium hydrogensulfite An inorganic sodium salt having hydrogensulfite as the counterion. sulfurous acid monosodium salt inorganic sodium salt sulfite salt allergen reducing agent food antioxidant food colour retention agent