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AMMONIUM SULFITE

CAS 10196-04-0
50

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

An inorganic sulfite salt restricted in EU cosmetics under Annex III/99 due to its classification as a skin and respiratory sensitizer.

Ammonium Sulfite (CAS 10196-04-0) is an inorganic salt used in cosmetics as a reducing agent and preservative. It is listed in EU Annex III under reference III/99 and V/9, indicating restrictions on its use due to sulfite classification. Sulfites are known skin and respiratory sensitizers that can cause allergic reactions, particularly in asthmatic individuals. PubChem safety score of 60. PubChem CID: 25041.

Skin benefits

  • Reducing agent for cosmetic formulations
  • Preservative properties

Known concerns

  • EU Annex III restricted cosmetic ingredient
  • Known skin and respiratory sensitizer
  • May cause allergic reactions especially in asthmatic individuals
  • Releases sulfur dioxide which is an allergen

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.