The draft RoHS Annex II dossier for the diisobutyl phthalate (DIBP) suggests that DIBP has minimal use within EEE products. One objective of the public consultation for DIBP is to update this information based on industry responses. DIBP may be used in nearly all of the same applications as the Phthalate DBP and is commonly used as a substitute; however, it also has similar hazard properties and environmental impact. The EU Commission is obviously concerned that the restriction of DBP under RoHS will cause significantly increased use in DIBP.

If the conclusion that DIBP is not significantly used in EEE stands — or likely to be used as a substitute; there will be little justification for the EU Commission to list DIBP as a RoHS Annex II restricted substance.