|Molar Mass||122.12 g/mol|
|Melting Point||122.3 °c|
|Boiling Point||249.2 °C|
As a preservative in cosmetic formulations, it is primarily an anti-fungal agent that prevents fungi from developing in products and formulas and changing their composition. It is less effective against bacteria.
Benzoic acid is an aromatic acid used in a wide variety of cosmetics as a pH adjuster and preservative. Benzoic acid has a long history of use as an antifungal agent in topical therapeutic preparations. It has been concluded that benzoic acid can be used safely at concentrations up to 5%, but that consideration should be given the nonimmunologic phenomena when using this ingredient in cosmetic formulations designed for infants and children.