Sodium benzoate (E211), also called benzoate of soda, has chemical formulaC6H5COONa. It is the sodium salt of benzoic acid and reverts to this form when dissolved in water. It boils at 249 degrees celsius.
As a food additive it is used as a preservative, effectively killing most yeast, bacteria and fungi. Sodium benzoate is effective only in acidic conditions (pH < 3.6) making its use most prevalent in foods such as preserves, salad dressings, carbonated drinks, jams, and fruit juices.
It is found naturally in cranberries, prunes, greengage plums, cinnamon, ripe cloves and apples. Concentration as a preservative is limited by the FDA in the U.S. to 0.1% by weight (because it is poisonous in larger quantities) though organically grown cranberries and prunes can concievably contain levels exceeding this limit.
Sodiumbenzoate is the sodium salt of benzoic acid.
Benzoic acid is highly toxic to microbes however, it is less effective against molds.
Sodiumbenzoate is effective only in acidic conditions (pH < 3.6) making its use most prevalent in foods such as preserves, salad dressings (vinegar), carbonated drinks (carbon dioxide), jams (citric acid), fruit juices (citric acid), and chinese food sauces (soy, mustard, and duck).
"Benzoate of Soda" is the trade name for SodiumBenzoate, a practically flavorless and tasteless chemical preservative, which is perfectly harmless in the small amounts commonly used, usually one-tenth of one per cent.
Benzoate of Soda is found natural in cranberries, plums, and some other fruits, while it also occurs in nature in a number of vegetable sub-stances.
Sal soda is the common washing soda, while saleratus is the common baking soda.
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