The European Commission (EC) published a regulation on November 30, 2021, in the Official Journal of the European Union that denies the authorization of titanium dioxide (E171) as an additive in animal nutrition, in the additive category “sensory additives,” and in the functional group “colourants: substances that add or restore colour in feedingstuffs.” Under the

On January 8, 2010, the U.S. Environmental Protection Agency (EPA) extended until February 8, 2010, the comment period for its November 6, 2009, proposed significant new use rules (SNUR) for multi-walled carbon nanotubes (CNT) and single-walled CNTs.  According to the January 8, 2010, notice, EPA received a request to extend the comment period.  On