Sodium sorbate
Sodium sorbate is the sodium salt of sorbic acid. Its formula is NaC6H7O2 and systematic name is sodium -hexa-2,4-dienoate.
It is a food additive with E-number E201.Unlike other sorbic acid salts such as potassium sorbate and calcium sorbate, the use of sodium sorbate as a food additive is not allowed in the EU due to potential genotoxic effects.