Sodium benzoate is an organic chemical compound, used as a food preservative.
- C6H5OONa + NaOH → C6H6 + Na2CO3
Ascorbic acid will also reduce the salt to benzene.
Sodium benzoate is a white hygroscopic compound, with a characteristic smell. It has a solubility in water of 62.7 g/100 mL at standard conditions. Sodium benzoate is also soluble in liquid ammonia and pyridine. It is poorly soluble in methanol and ethanol.
Sodium benzoate is available as a food preservative, sold in sealed bags.
Sodium benzoate can be prepared by reacting benzoic acid and sodium hydroxide, bicarbonate or carbonate.
- Benzene synthesis
- Whistle mix
Sodium benzoate has low toxicity to humans, and recent studies have shown to have some beneficial effects, in preventing Alzheimer and Parkinson's, though the results aren't conclusive so far. Cats however, have a significantly lower tolerance against benzoic acid and its salts, than rats and mice.
Should be stored in closed bottles, as it's slightly hygroscopic.
Sodium benzoate has low toxicity and doesn't require special disposal.