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Is Mercaptopropyltrimethoxysilane vegan?

Mercaptopropyltrimethoxysilane

Vegan Vegan
Vegetarian Vegetarian

Mercaptopropyltrimethoxysilane is a synthetic organosilicon compound consisting of a silicon atom bonded to three methoxy groups and one mercaptopropyl (thiol) substituent group. It is used as a coupling agent and surface modifier in cosmetics and materials science.

Also known as 3-Mercaptopropyltrimethoxysilane, MPTMS
INCI name Mercaptopropyltrimethoxysilane
CAS number 4420-74-0
EC number 224-588-5
CosIng ID 91074
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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