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AMMONIUM BENZOATE.

Valuable CAS 1863-63-4 / PRESERVATIVE

Ammonium Benzoate functions primarily as an antimicrobial preservative in cosmetic formulations. It effectively inhibits the growth of bacteria, yeasts, and molds, thereby extending product shelf life.

preservative buffering

Science

The benzoate anion penetrates microbial cell membranes, disrupting metabolic processes such as the citric acid cycle and oxidative phosphorylation. This interference inhibits the proliferation of various microorganisms.


Research

High confidence
Effective range 0.025–0.5%
Optimal

0.5%

Key findings

  1. 01 Demonstrated fungicide and bactericide efficacy in aqueous systems when combined with potassium oleate.
  2. 02 Effective at 0.5% (as acid equivalent) for inhibiting microbial growth in cosmetic formulations.

Transparency

Not commonly dusted

Information regarding dusting practices for Ammonium Benzoate is not available in the provided research data.


The Formula

Solubility
Water
Optimal pH 4.5 – 7
0 7 14

Stability

It is highly water-soluble but can gradually lose ammonia upon air exposure, leading to pH shifts. Optimal stability is achieved in airtight containers at room temperature.

Conflicts

  • Alkali hydroxides
  • Strong acids
  • Strong oxidizing agents
  • Ferric salts

Safety

CIR Status
Safe with restrictions
Max tested
0.5%
Sensitization risk Low

The CIR and SCCS restrict its use to a maximum concentration of 0.5% (as acid equivalent) in cosmetic products. Concentrated forms may cause eye and skin irritation.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

Ammonium Benzoate is a valuable antimicrobial preservative, safe and effective at low concentrations across various skin types, ensuring product integrity and shelf life.


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