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E285: Sodium tetraborate

Also called: Borax

Preservatives

What it does

Preserves (only allowed in sturgeon caviar).

What it is made from

Mined or synthetic.

Allergies and diets

No allergy or diet concern is recorded for this additive. That is not a guarantee: the source can differ between makers, so check the label.

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General information, not medical advice. Sources differ between manufacturers: check the label or ask the maker.

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