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pH Adjuster

POTASSIUM OXIDE

CAS 12136-45-7 Updated
35

Safety score · 0–100

Caution

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

About

A strongly caustic mineral oxide — reacts violently with moisture to form potassium hydroxide. Used only as an in-process pH source; corrosive and irritating raw.

Function

BUFFERING

Skin benefits

  • pH adjuster (in situ)
  • Source of potassium ions

Known concerns

  • Strongly caustic on contact with water
  • Severe skin and eye burns
  • Corrosive raw material
  • Inappropriate as a finished product ingredient

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.