Database/Solvent/1,5-Pentanediol
100% petroleum · ISO 16128

Is 1,5-Pentanediol natural?

No. The C5 diol chain comes from glutarate esters of the cyclohexane-adipic acid stream, so the main commercial product has no natural-origin feedstock.

INCI name1,5-Pentanediol
CAS111-29-5
FormulaC5H12O2 · 104.15 Da
FunctionSolvent · Solvent
FeedstockDominant route hydrogenates glutaric acid or dimethyl glutarate…

How we scored it

C5H12O2 104.15 Da: five-carbon chain from glutaric acid or dimethyl glutarate (adipic-acid process stream), petrochemical; hydrogen leaves no mass. 0 / 104.15 = 0.00.
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

Dominant route hydrogenates glutaric acid or dimethyl glutarate from the petrochemical adipic acid process. A minor bio-based route hydrogenolyses tetrahydrofurfuryl alcohol made from furfural, but it is not the main cosmetic supply.

In plain English

A five-carbon diol (a chain with an alcohol group at each end), a clear water-miscible liquid used as a solvent in cosmetic formulas. It is normally made in chemical plants from petroleum-derived intermediates, though a plant-based version can be made from furfural.

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Structure

2D structure of 1,5-Pentanediol

pentane-1,5-diol

PubChem CID 8105 ↗

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. 21,5-Pentanediol. PubChem CID 8105. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 31,5-PENTANEDIOL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 41,5-PENTANEDIOL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=1%2C5-PENTANEDIOL