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'R-phrases' (short for 'Risk Phrases') are defined in Annex III of European Union Directive 67/548/EEC: ''Nature of special risks attributed to dangerous substances and preparations''. The list was consolidated and republished in Directive 2001/59/EC, where translations into other EU languages may be found.
These risk phrases are used internationally not just in Europe and there is an ongoing effort towards complete international harmonisation. ''(Note: missing R-number combinations indicate phrases that were deleted or replaced by another phrase.)''

★ : Explosive when dry

★ : Risk of explosion by shock, friction, fire or other sources of ignition

★ : Extreme risk of explosion by shock, friction, fire or other sources of ignition

★ : Forms very sensitive explosive metallic compounds

★ : Heating may cause an explosion

★ : Explosive with or without contact with air

★ : May cause fire

★ : Contact with combustible material may cause fire

★ : Explosive when mixed with combustible material

★ : Flammable

★ : Highly flammable

★ : Extremely flammable

★ : Reacts violently with water

★ : Contact with water liberates extremely flammable gases

★ : Explosive when mixed with oxidising substances

★ : Spontaneously flammable in air

★ : In use, may form flammable/explosive vapour-air mixture

★ : May form explosive peroxides

★ : Harmful by inhalation

★ : Harmful in contact with skin

★ : Harmful if swallowed

★ : Toxic by inhalation

★ : Toxic in contact with skin

★ : Toxic if swallowed

★ : Very toxic by inhalation

★ : Very toxic in contact with skin

★ : Very toxic if swallowed

★ : Contact with water liberates toxic gas.

★ : Can become highly flammable in use

★ : Contact with acids liberates toxic gas

★ : Contact with acids liberates very toxic gas

★ : Danger of cumulative effects

★ : Causes burns

★ : Causes severe burns

★ : Irritating to eyes

★ : Irritating to respiratory system

★ : Irritating to skin

★ : Danger of very serious irreversible effects

★ : Limited evidence of a carcinogenic effect

★ : Risk of serious damage to eyes

★ : May cause sensitisation by inhalation

★ : May cause sensitisation by skin contact

★ : Risk of explosion if heated under confinement

★ : May cause cancer

★ : May cause heritable genetic damage

★ : Danger of serious damage to health by prolonged exposure

★ : May cause cancer by inhalation

★ : Very toxic to aquatic organisms

★ : Toxic to aquatic organisms

★ : Harmful to aquatic organisms

★ : May cause long-term adverse effects in the aquatic environment

★ : Toxic to flora

★ : Toxic to fauna

★ : Toxic to soil organisms

★ : Toxic to bees

★ : May cause long-term adverse effects in the environment

★ : Dangerous for the ozone layer

★ : May impair fertility

★ : May cause harm to the unborn child

★ : Possible risk of impaired fertility

★ : Possible risk of harm to the unborn child

★ : May cause harm to breast-fed babies

★ : Harmful: may cause lung damage if swallowed

★ : Repeated exposure may cause skin dryness or cracking

★ : Vapours may cause drowsiness and dizziness

★ : Possible risk of irreversible effects
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★ : Reacts violently with water, liberating extremely flammable gases

★ : Contact with water liberates toxic, extremely flammable gases

★ : Harmful by inhalation and in contact with skin

★ : Harmful by inhalation and if swallowed

★ : Harmful by inhalation, in contact with skin and if swallowed

★ : Harmful in contact with skin and if swallowed

★ : Toxic by inhalation and in contact with skin

★ : Toxic by inhalation and if swallowed

★ : Toxic by inhalation, in contact with skin and if swallowed

★ : Toxic in contact with skin and if swallowed

★ : Very toxic by inhalation and in contact with skin

★ : Very toxic by inhalation and if swallowed

★ : Very toxic by inhalation, in contact with skin and if swallowed

★ : Very toxic in contact with skin and if swallowed

★ : Irritating to eyes and respiratory system

★ : Irritating to eyes and skin

★ : Irritating to eyes, respiratory system and skin

★ : Irritating to respiratory system and skin

★ : Toxic: danger of very serious irreversible effects through inhalation

★ : Toxic: danger of very serious irreversible effects in contact with skin

★ : Toxic: danger of very serious irreversible effects if swallowed

★ : Toxic: danger of very serious irreversible effects through inhalation and in contact with skin

★ : Toxic: danger of very serious irreversible effects through inhalation and if swallowed

★ : Toxic: danger of very serious irreversible effects in contact with skin and if swallowed

★ : Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed

★ : Very Toxic: danger of very serious irreversible effects through inhalation

★ : Very Toxic: danger of very serious irreversible effects in contact with skin

★ : Very Toxic: danger of very serious irreversible effects if swallowed

★ : Very Toxic: danger of very serious irreversible effects through inhalation and in contact with skin

★ : Very Toxic: danger of very serious irreversible effects through inhalation and if swallowed

★ : Very Toxic: danger of very serious irreversible effects in contact with skin and if swallowed

★ : Very Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed

★ : May cause sensitisation by inhalation and skin contact

★ : Harmful: danger of serious damage to health by prolonged exposure through inhalation

★ : Harmful: danger of serious damage to health by prolonged exposure in contact with skin

★ : Harmful: danger of serious damage to health by prolonged exposure if swallowed

★ : Harmful: danger of serious damage to health by prolonged exposure through inhalation and in contact with skin

★ : Harmful: danger of serious damage to health by prolonged exposure through inhalation and if swallowed

★ : Harmful: danger of serious damage to health by prolonged exposure in contact with skin and if swallowed

★ : Harmful: danger of serious damage to health by prolonged exposure through inhalation, in contact with skin and if swallowed

★ : Toxic: danger of serious damage to health by prolonged exposure through inhalation

★ : Toxic: danger of serious damage to health by prolonged exposure in contact with skin

★ : Toxic: danger of serious damage to health by prolonged exposure if swallowed

★ : Toxic: danger of serious damage to health by prolonged exposure through inhalation and in contact with skin

★ : Toxic: danger of serious damage to health by prolonged exposure through inhalation and if swallowed

★ : Toxic: danger of serious damage to health by prolonged exposure in contact with skin and if swallowed

★ : Toxic: danger of serious damage to health by prolonged exposure through inhalation, in contact with skin and if swallowed

★ : Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment

★ : Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment

★ : Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment

★ : Harmful: possible risk of irreversible effects through inhalation

★ : Harmful: possible risk of irreversible effects in contact with skin

★ : Harmful: possible risk of irreversible effects if swallowed

★ : Harmful: possible risk of irreversible effects through inhalation and in contact with skin

★ : Harmful: possible risk of irreversible effects through inhalation and if swallowed

★ : Harmful: possible risk of irreversible effects in contact with skin and if swallowed

★ : Harmful: possible risk of irreversible effects through inhalation, in contact with skin and if swallowed

Contents

R-Phrases no longer in use

See also

R-Phrases no longer in use

★ R13: Extremely flammable liquified gas.

★ R47: May cause birth defects.

See also

★ List of S-phrases

★ Material safety data sheet

★ Risk and Safety Statements