Benzoic acid nat. by Evonik Dr. Straetmans is a naturally derived benzoic acid sourced from cassia oil. Its natural origin makes it relevant to formulators developing COSMOS-compliant or certified natural products where naturally sourced versions of Annex V preservatives are required.
Efficacy falls significantly above pH 6 as the proportion of undissociated free acid decreases. For broad spectrum protection best to combine with other antimicrobials