Consider the following, which is/are used as food preservatives?
Sodium benzoate is a substance which has the chemical formula C6H5COONa. It is a widely used food preservative, with an E number of E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid. Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. Ref : Internet
Ethylene dibromide & Potassium meta-bisulphate
Sodium benzoate
Potassium meta-bisulphate & Sodium benzoate
Ethylene dibromide / Potassium meta-bisulphate & Sodium benzoate
Environment and health