occurring pigments of iron, which can be yellow, red, orange, brown
or black in colour.
by treating a solution of ferrous sulphate or chloride with an alkali
and oxidising the precipitate in hot air. As the iron present in these
oxides is in the ferric form it is not very actively available to body
be found in cake and dessert mixes, meat paste, salmon and shrimp paste.
at 'high doses', banned in Germany.