Iron oxides and hydroxides

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

1309-33-7 (Eisenhydroxid); CAS No 1309-37-1 (Eisenoxid)

Definition
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Iron oxides and hydroxides are yellow, red, red-brown and black pigments. They are insoluble in water and soluble in dilute hydrochloric acid.

Field of application/use
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Food additive (E 172)

Colour pigment in paints and polishes

Incoming links (2)

E 172; Food additives (overview);

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Last updated on: 29.10.2020