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Colouring agent E171 (Titanium Dioxide)
Titanium dioxide is a white pigment used as a colorant in food and other products.
Mineral or nutrientUpdated Mar 29, 2026
Health score-4.0
-5Very bad5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Potential inhalation toxicity in powder form, possible genotoxicity concerns, regulatory restrictions in food due to nanoparticle content
Benefits
Provides white pigmentation and opacity in food products