E519
Copper Sulphate
Preservative
Copper salt. Used as colour fixative. Toxic at high doses. Strictly limited in food.
Found in
Olives (traditional processing)
Daily intake limit
0-0.5 mg/kg bw (as copper)
Body systems affected
Immune
May trigger allergic reactions or intolerance in sensitive individuals
Digestive
High intake may disrupt beneficial gut bacteria
What the research says
Research on Copper Sulphate (E519) is ongoing. Regulatory agencies have evaluated its safety for permitted uses.
Allergenic potential: Low to moderate
FDA Permitted
EFSA Approved
WHO Evaluated
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