The recast of the Directive on the Restriction of Hazardous Substances (RoHS) was published in the July 1, 2011, Official Journal of the European Union. The notice calls for the restriction of other hazardous substances and their substitution by more “environmentally friendly alternatives” as soon as scientific evidence is available, and taking into account the precautionary principle. The notice specifically states that these “other hazardous substances” include “any substances of very small size or with a very small internal or surface structure (nanomaterials) which may be hazardous due to properties relating to their size or structure.” Proposed restrictions on additional substances, including nanosilver and long multi-walled carbon nanotubes, were not supported by the European Union (EU) Council and were not included in the version of the legislation passed by both the EU Council and European Parliament (EP).