To ensure the optimal precipitation percentage, it is important to carefully control these factors during the precipitation process. For example, a higher concentration of titanium sulfate will typically result in a higher precipitation percentage, but may also lead to the formation of impurities. On the other hand, a lower pH of the reaction mixture can promote the precipitation of titanium hydroxide, but may also result in a lower precipitation percentage.

The FDA continues to allow for the safe use of titanium dioxide as a color additive in foods generally according to the specifications and conditions, including that the quantity of titanium dioxide does not exceed 1% by weight of the food, the FDA said in a statement to USA TODAY.

Titanium dioxide R-996 is mainly used in powder coatings, water-based and solvent-based external coatings, high-grade color masterbatches, plastics, rubber, inks, high-grade paper and wax paper and leather upholstery fabrics, cosmetics, suitable for high-grade interior coatings, high-solid paints, Road marking paints, marine paints and inks, and also used in the plastics, rubber, paper and leather industries.