Titanium Dioxide E171
inorganic — Primarily mineral.
Titanium(IV) oxide
CAS: 13463-67-7
Factual Regulatory Reference
This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and is subject to change. Always refer to your local regulatory authority for the most current information.
What Is Titanium Dioxide?
Titanium dioxide (E171) is an inorganic white pigment derived from naturally occurring titanium-bearing minerals such as ilmenite and rutile, processed industrially via the sulfate or chloride method to produce food-grade powder. It is used to whiten and opacify confectionery, chewing gum, pastry decoration, and some dairy products, and is also extensively used in sunscreens and paints. The EU banned E171 as a food additive in August 2022 under Regulation (EU) 2022/63 after EFSA concluded in 2021 that genotoxicity could not be ruled out, particularly due to concerns about the nanoparticle fraction — without establishing that it causes harm at typical exposure levels; the FDA continues to permit it in the United States up to 1% of food weight, reflecting a fundamentally different risk threshold from the EU's precautionary approach.
? Did You Know?
Titanium Dioxide occurs naturally in Rutile mineral and Anatase mineral. Many people consume it daily without realizing it's also a listed food additive.
Beyond food, Titanium Dioxide is also used in cosmetics, medicine, industrial applications. Its versatility makes it one of the most multi-purpose chemical compounds in everyday life.
Regulatory opinions differ: Titanium Dioxide is approved in USA, JAPAN, CANADA but banned in EU. This reflects different risk assessment philosophies between regions.
Regulatory Analysis
The EU ban on titanium dioxide in 2022 is the paradigmatic case of the precautionary principle in action, where EFSA concluded not that E171 was proven genotoxic, but that genotoxicity could not be ruled out due to the nanoparticle fraction. The FDA reviewed substantially the same body of evidence and reached the opposite conclusion, maintaining approval at up to 1% by weight. France's unilateral ban two years before the EU-wide action, and the European Court of Justice's subsequent validation of the EU ban, established a precedent that the inability to exclude a hazard -- rather than proof of one -- can be sufficient regulatory grounds for removal.
Detailed Regulatory Assessment
United States (FDA)
Not to exceed 1% by weight of the food
Japan (MHLW)
Compliant with Japanese food sanitation law.
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Natural Occurrence
A naturally occurring mineral, though the food-grade additive is produced industrially.
Manufacturing
Produced commercially by the sulfate process or chloride process from titanium-containing minerals like ilmenite or rutile.
Applications Beyond Food
Widely used in sunscreens, makeup, and toothpaste as a white pigment and UV filter.
Used as an opacifier and colorant in tablets and capsules.
Used in paints, plastics, paper, and as a photocatalyst.
Safety & Regulatory History
Full Timeline →FDA approved titanium dioxide for use in food, not to exceed 1% of food weight.
Food-grade titanium dioxide authorized in the EU under E171 designation.
EFSA re-evaluated E171, identified data gaps on particle size distribution and possible effects o...
France suspended use of E171 in food products, ahead of EU-wide action, citing precautionary prin...
EFSA concluded E171 can no longer be considered safe as a food additive. Genotoxicity concerns co...
Commission Regulation (EU) 2022/63 published, removing E171 from permitted additives list (Annexe...
Full ban on E171 as food additive in EU entered into force.
EU Court of Justice ruling confirmed that titanium dioxide powder forms are no longer classified ...
FDA approved titanium dioxide for use in food, not to exceed 1% of food weight.
Food-grade titanium dioxide authorized in the EU under E171 designation.
EFSA re-evaluated E171, identified data gaps on particle size distribution and possible effects on reproductive system. Recommended new studies.
France suspended use of E171 in food products, ahead of EU-wide action, citing precautionary principle.
EFSA concluded E171 can no longer be considered safe as a food additive. Genotoxicity concerns could not be ruled out after reviewing evidence on nanoparticles.
Commission Regulation (EU) 2022/63 published, removing E171 from permitted additives list (Annexes II and III). Six-month transition period announced.
Full ban on E171 as food additive in EU entered into force.
EU Court of Justice ruling confirmed that titanium dioxide powder forms are no longer classified as suspected carcinogen by inhalation, but food ban remains.