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Hair Conditioning

STEARAMINE

CAS 124-30-1 Updated
28

Safety score · 0–100

Caution

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

About

A long-chain primary amine (octadecylamine). GHS flags skin and serious eye irritation plus aquatic toxicity, so neutralized/quaternized derivatives are preferred.

Stearamine (octadecylamine, CAS 124-30-1, PubChem CID 15793) is an 18-carbon primary fatty amine used as a cationic emulsifier and antistatic agent, more commonly industrial than cosmetic. Its GHS classification under EU CLP is Danger: H304 (fatal if swallowed and enters airways), H315 (skin irritation), H318 (serious eye damage), H373 (target-organ toxicity on prolonged exposure), and H410 (very toxic to aquatic life). Modern hair and skin formulations almost always use neutralized or quaternized derivatives instead of free stearamine. Free-base use at any meaningful concentration is not advisable.

Function

ANTISTATIC

Skin benefits

  • Cationic emulsifier for hair conditioning
  • Antistatic on fibers
  • Processing aid in specialty formulas

Known concerns

  • Skin irritant
  • Serious eye damage
  • Aquatic toxicity
  • Aspiration hazard

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.