CLP, 2.2.3., Hazard Communication

Label elements shall be used for substances and mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.2.3.

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Table 2.2.3

Label elements for flammable gases (including chemically unstable gases)

Classification	Flammable gas		Chemically unstable gas
Classification	Category 1	Category 2	Category A	Category B
GHS Pictogram		No pictogram	No additional pictogram	No additional pictogram
Signal Word	Danger	Warning	No additional signal word	No additional signal word
Hazard Statement	H220: Extremely flammable gas	H221: Flammable gas	Additional hazard statement H230: May react explosively even in the absence of air	Additional hazard statement H231: May react explosively even in the absence of air at elevated pressure and/or temperature
Precautionary Statement Prevention	P210	P210	P202	P202
Precautionary Statement Response	P377 P381	P377 P381
Precautionary Statement Storage	P403	P403
Precautionary Statement Disposal

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The classification procedure is set out in the following decision logic (see Figures 2.2.1 to 2.2.2).

Figure 2.2.1

Flammable gases

Figure 2.2.2

Chemically unstable gases

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