The CLP Regulation sets out a phased transitional period during which the rules of both CLP
and the previous legislation on classification, labelling and packaging, i.e. the DSD and DPD
directives, are applicable in parallel. In relation to classification, labelling and packaging, CLP
sets out different timelines for substances and mixtures. This is to give companies time to
migrate from the DSD/DPD system to the CLP rules. However, they have been allowed to apply
CLP in full on a voluntary basis since its entry into force, see CLP Article 61.