Scientific opinion on the proposed amendment of the EU specifications for titanium dioxide (E 171) with respect to the inclusion of additional parameters related to its particle size distribution, Maged, Younes, Aquilina Gabriele, Castle Laurence, Engel Karl?Heinz, Fowler Paul, Frutos Fernandez Maria Jose, Gürtler Rainer, Gundert?Remy Ursula, Husøy Trine, Mennes Wim, et al. , EFSA Journal, 2019 July 12, Volume 17, Issue 7, (2019)