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Moumoujus

AMMONIUM BICARBONATE.

Valuable CAS 1066-33-7 / BUFFERING

Ammonium Bicarbonate is a versatile ingredient primarily used as a buffering agent to stabilize pH. It can also function as a mild exfoliant and enhance active ingredient absorption.

Summary

buffering pH adjuster exfoliating agent

Science

Mechanism of Action

It dissociates into bicarbonate ions, neutralizing acidity and adjusting pH. Thermal decomposition releases ammonia, CO2, and water, which can provide an alkaline environment with antifungal properties.

Research

Clinical Evidence

High confidence
Effective range 0.5–5%
Optimal

5%

Key findings

  1. 01 Slate Cosmetic Ingredient Analysis (2024); Tenger Chemical Skincare Research
  2. 02 Taylor & Francis Knowledge Centers; Analytical Biochemistry

Transparency

Dusting Analysis

Not commonly dusted

No data suggests Ammonium Bicarbonate is commonly 'dusted' as a primary active ingredient in formulations.

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 7
0 7 14

Stability

Highly water-soluble but thermally unstable, decomposing above 34-36°C. This can cause gas buildup in sealed containers and a strong ammonia odor.

Conflicts

  • strong acids
  • caustic alkalis
  • strong oxidizing agents
  • heavy metal salts (copper, nickel, zinc)
  • high temperature processing

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

CIR Expert Panel (2022) found it safe as used if formulated to be non-irritating. It is FDA GRAS for food; high concentrations may irritate eyes, skin, or respiratory system.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Ammonium Bicarbonate is a valuable pH adjuster and mild exfoliant, well-tolerated across most skin types, making it suitable for various cosmetic formulations.

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