Database/Binding/Trimethoxycaprylylsilane
100% petroleum · ISO 16128

Is Trimethoxycaprylylsilane natural?

No. Organosilicon compounds, silicones and silanes alike, score 0.0 on this site by convention, even when a side chain such as the octyl group could be oleochemical. Same ruling as Triethoxycaprylylsilane.

INCI nameTrimethoxycaprylylsilane
CAS3069-40-7
FormulaC11H26O3Si · 234.41 Da
FunctionBinding · Smoothing
FeedstockOctyltrichlorosilane or octene hydrosilylation product methoxylated with methanol.

How we scored it

(CH3O)3Si-C8H17, 234.4 Da: organosilicon (silane with a silicon-carbon bond) → 0.0 by this site's convention, whatever the side chains; same ruling as Triethoxycaprylylsilane.
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

Octyltrichlorosilane or octene hydrosilylation product methoxylated with methanol.

In plain English

A silicon-based coating agent used to make powders like titanium dioxide water-repellent and easier to blend into formulas. Part comes from plant-derived fatty alcohol and mineral silicon, part from a synthetic methanol-derived component.

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Structure

2D structure of Trimethoxycaprylylsilane

trimethoxy(octyl)silane

PubChem CID 76485 ↗

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. 2Trimethoxycaprylylsilane. PubChem CID 76485. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3TRIMETHOXYCAPRYLYLSILANE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4TRIMETHOXYCAPRYLYLSILANE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TRIMETHOXYCAPRYLYLSILANE