No pictogram is necessary for the following classes and categories of physical hazards:

• Section 2.1
  Explosives of Division 1.5

• Section 2.1
  Explosives of Division 1.6

• Section 2.2
  Flammable gases, hazard category 2

• Section 2.3
  Aerosols, hazard category 3

• Section 2.8
  Self-reactive substances and mixtures, Type G

• Section 2.15
  Organic peroxides, Type G