Siloxane

A siloxane is a molecule containing two silicon atoms connected by chemical bonds to one oxygen atom.

Thumb — Polydimethylsiloxane is a molecule made of many repeating siloxane (Si−O−Si) units.

The term properly only means compounds containing oxygen, silicon, and hydrogen, but is often expanded to include compounds with organic substituents like alkyl groups.^[1]

Polymeric siloxanes are called silicones.^[2] Silicones are important in making many kinds of plastic and rubber.

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Siloxane

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