European Commission Defines 'Nanomaterial'

The European Commission, after years of discussion, has adopted an official definition of 'nanomaterial,' but industry says it is concerned that the description is too broad and could result in the regulation of substances not previously considered to be nanomaterials. The decision classifies a nanomaterial as "a natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the...

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