ECHA has published a guidance on labelling and packaging in accordance with the CLP Regulation.

There are several examples for the appropriate package design.

The selection of Precautionary statements (P-phrases) makes the biggest part of this guide. The authors from authorities and industry have choosen a pragmatic approach. For the single Hazard classes and categories a suitable and manageable set of P-phrases - tagged with the labels Highly recommended, Recommended and Optional - is listed.

You can download the document here.