The Health Concern
Fig. 1. Weight loss (%) of vitaminB2@P25TiO2NPs.
The raw material used in this method is FeSO4. In order to maintain the Fe3 + concentration in the reaction medium in a specific range, reducing agent iron sheet is added in the reaction process. Iron yellow crystal seed was added and air was introduced to synthesize iron yellow under certain pH conditions. The method mainly includes two steps: (1) firstly, FeSO4 · 7H2O is used as raw material, NaOH or NH3 · H2O is used as precipitant or pH regulator, and air is used as oxidant to prepare crystal seed; (2) Iron yellow is produced by two-step oxidation with crystal seed, FeSO4, iron sheet and air.


Titanium dioxide makes products, like toothpaste, white and bright. It's also used in makeup, sunscreen, plastic, and paint. (Photo Credit: iStock/Getty Images)
1: Flocculation principle

Additional Health Concerns Linked to Titanium Dioxide
For those wishing to limit or avoid exposure to titanium dioxide in foods, there are some steps you can take.
High Scattering Power TiO2 DongFang R5566
