Explanation R Phrases
R1:Explosive when dry.
R2: Risk of explosion by shock, friction, fire or other sources of ignition.
R3: Extreme risk of explosion by shock, friction, fire or other sources of ignition.
R4: Forms very sensitive explosive metallic compounds.
R5: Heating may cause an explosion.
R6: Explosive with or without contact with air.
R7: May cause fire.
R8: Contact with combustible material may cause fire.
R9: Explosive when mixed with combustible material.
R11: Highly flammable
R12: Extremely flammable
R14: Reacts violently with water.
R15: Contact with water liberates extremely flammable gases.
R16: Explosive when mixed with oxidizing substances.
R17: Spontaneously flammable in air.
R18: In use, may form flammable/explosive vapour-air mixture.
R19: May form explosive peroxides.
R20: Harmful by inhalation.
R21: Harmful in contact with skin.
R22: Harmful if swallowed.
R23: Toxic by inhalation.
R24: Toxic in contact with skin.
R25: Toxic if swallowed.
R26: Very toxic by inhalation.
R27: Very toxic in contact with skin
R28: Very toxic if swallowed.
R29: Contact with water liberates toxic gas.
R30: Can become highly flammable in use.
R31: Contact with acids liberates toxic gas.
R32: Contact with acids liberates very toxic gas.
R33: Danger of cumulative effects.
R34: Causes burns.
R35: Causes severe burns.
R36: Irritating to eyes.
R37: Irritating to respiratory system.
R38: Irritating to skin.
R39: Danger of very serious irreversible effects.
R40: Possible risk of cancer.
CAUTION: Until 2001 this R-phrase was used for possible mutagenic or teratogenic risks as well. These risks are now labelled with R68!
R41: Risk of serious damage to eyes.
R42: May cause sensitization by inhalation.
R43: May cause sensitization by skin contact.
R44: Risk of explosion if heated under confinement.
R45: May cause cancer.
R46: May cause heritable genetic damage.
R48: Danger of serious damage to health by prolonged exposure.
R49: May cause cancer by inhalation.
R50: Very toxic to aquatic organisms.
R51: Toxic to aquatic organisms.
R52: Harmful to aquatic organisms.
R53: May cause long-term adverse effects in the aquatic environment.
R54: Toxic to flora.
R55: Toxic to fauna.
R56: Toxic to soil organisms.
R57: Toxic to bees.
R58: May cause long-term adverse effects in the environment.
R59: Dangerous for the ozone layer.
R60: May impair fertility.
R61: May cause harm to the unborn child.
R62: Possible risk of impaired fertility.
R63: Possible risk of harm to the unborn child.
R64: May cause harm to breastfed babies.
R65: Harmful: may cause lung damage if swallowed.
R66: Repeated exposure may cause skin dryness or cracking.
R67: Vapours may cause drowsiness and dizziness.
R68: Possible risks of irreversible effects.