Database/Fragrance/Dipropylene Glycol
100% petroleum · ISO 16128

Is Dipropylene Glycol natural?

No. Entirely built from petrochemical propylene oxide; no natural-origin fragment present.

INCI nameDipropylene Glycol
CAS110-98-5
FormulaC12H28O6 · 268.35 Da
FunctionFragrance · Solvent
FeedstockProduced by hydrating propylene oxide made from petroleum-refinery…

How we scored it

Built from 2 propylene oxide + water; propylene oxide is petrochemical → 0/134 = 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.

How it’s made

Propylene glycol alkoxide opens propylene oxide (SN2), then protonation. Each curved arrow moves one electron pair, and the film ends on the score above.

Where it comes from

Produced by hydrating propylene oxide made from petroleum-refinery propylene. No commercially significant natural route exists for this solvent.

In plain English

A clear liquid used as a solvent and to help fragrance blend into water-based products. It is manufactured from petroleum-derived propylene oxide, not from plants.

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Structure

2D structure of Dipropylene Glycol

2-(1-hydroxypropan-2-yloxy)propan-1-ol;1-(2-hydroxypropoxy)propan-2-ol

PubChem CID 134692469 ↗

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. 2Dipropylene Glycol. PubChem CID 134692469. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DIPROPYLENE GLYCOL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DIPROPYLENE GLYCOL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DIPROPYLENE%20GLYCOL