Database/Skin Conditioning/Hydroxypropyl Tetrahydropyrantriol
Mostly natural · ISO 16128

Is Hydroxypropyl Tetrahydropyrantriol natural?

Mostly. The pyran-triol ring is a sugar-derived structure; the hydroxypropyl substituent comes from petrochemical propylene oxide.

INCI nameHydroxypropyl Tetrahydropyrantriol
CAS439685-79-7
FormulaC8H16O5 · 192.21 Da
FunctionSkin Conditioning
FeedstockA sugar-derived tetrahydropyrantriol ring is reacted with propylene…

How we scored it

Tetrahydropyrantriol ring C5H10O4 (134.1) natural, sugar-derived; hydroxypropyl group net addition C3H6O (58.1) petrochemical; 134.1/192.2=0.70.
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

A sugar-derived tetrahydropyrantriol ring is reacted with propylene oxide to add a hydroxypropyl group. The ring is natural in origin; the hydroxypropyl group is petrochemical.

In plain English

A synthetic skin-conditioning ingredient built from a sugar-derived ring structure modified with a hydroxypropyl group, used to help skin hold onto moisture.

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Structure

2D structure of Hydroxypropyl Tetrahydropyrantriol

(2S,3R,4S,5R)-2-(2-hydroxypropyl)oxane-3,4,5-triol

PubChem CID 16666733 ↗

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. 2Hydroxypropyl Tetrahydropyrantriol. PubChem CID 16666733. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3HYDROXYPROPYL TETRAHYDROPYRANTRIOL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4HYDROXYPROPYL TETRAHYDROPYRANTRIOL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HYDROXYPROPYL%20TETRAHYDROPYRANTRIOL