The substance must be labelled as environmentally hazardous according to Regulation (EC) No. 1272/2008 (CLP Regulation). However, because of the limitation of the quantity transported in special packaging provision PP24 of the RID, no marking of packages is required according to 5.2.1.8.1 or marking of containers with the environmentally hazardous substance mark according to sub-section 5.3.6.1.