Ingredient · E900a

Dimethyl polysiloxane

Source
Not animal-derived
Allergen
No
Role in food
Dimethyl polysiloxane is used as an anti-foaming agent in food processing. It prevents excessive …

What is Dimethyl polysiloxane?

Dimethyl polysiloxane is a synthetic silicone polymer. It is produced by polymerising dimethylsiloxane, a cyclic siloxane monomer. It is a clear, odourless, and tasteless liquid.

Is Dimethyl polysiloxane vegan?

Dimethyl polysiloxane is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.

Is Dimethyl polysiloxane gluten-free?

It does not contain gluten.

Is Dimethyl polysiloxane a major allergen?

Dimethyl polysiloxane is not one of the 14 major allergens that UK law requires to be emphasised on food labels.

What is Dimethyl polysiloxane used for?

Dimethyl polysiloxane is used as an anti-foaming agent in food processing.

Is Dimethyl polysiloxane safe?

Dimethyl polysiloxane is authorised as a food additive in Great Britain and is listed on the Register of Food Additive Authorisations.

Why it's used

Dimethyl polysiloxane is used as an anti-foaming agent in food processing. It prevents excessive foam formation during cooking, baking, and other food manufacturing processes. It is commonly found in products like vegetable oils, protein powders, and baked goods.

Health notes

Dimethyl polysiloxane is authorised as a food additive in Great Britain and is listed on the Register of Food Additive Authorisations. European food safety authorities, including EFSA, have evaluated it. JECFA has also evaluated it and set an acceptable daily intake. At the levels typically consumed in food, it is not considered to pose a health risk.

Allergen info

Dimethyl polysiloxane is not one of the 14 major allergens that UK law requires to be emphasised on food labels. It does not contain gluten.

Foods that contain Dimethyl polysiloxane

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Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: 17 October 2026

Note: This site presents label data from Open Food Facts for general information. It is not medical advice. Check the package label; formulations change.