Database/Antimicrobial/Octylisothiazolinone
100% petroleum · ISO 16128

Is Octylisothiazolinone natural?

No. Both the octyl chain and the isothiazolinone ring are produced from petrochemical intermediates, with no natural feedstock route.

INCI nameOctylisothiazolinone
CAS26530-20-1
FormulaC11H19NOS · 213.34 Da
FunctionAntimicrobial
FeedstockSynthesised from petrochemical octylamine and isothiazolinone ring-forming reagents.…

How we scored it

Octyl isothiazolinone ring system built from petrochemical octyl chain and synthetic isothiazolinone chemistry; no natural fragment → 0/213 = 0.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Synthesised from petrochemical octylamine and isothiazolinone ring-forming reagents. No natural route exists commercially.

In plain English

A preservative used to prevent microbial growth in products, made from synthetic petrochemical building blocks. Has no natural source.

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Structure

2D structure of Octylisothiazolinone

2-octyl-1,2-thiazol-3-one

PubChem CID 33528 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Octylisothiazolinone. PubChem CID 33528. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3OCTYLISOTHIAZOLINONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4OCTYLISOTHIAZOLINONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=OCTYLISOTHIAZOLINONE