Risk Numbers and Phrases

Number

Statutory Risk Phrase

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

R10:

Flammable

R11:

Highly flammable

R12:

Extremely flammable

R14:

Reacts violently with water

R15:

Contact with water liberates extremely flammable gases

R16:

Explosive when mixed with oxidising 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 the eyes

R37:

Irritating to the respiratory system

R38:

Irritating to the skin

R39:

Danger of very serious irreversible effects

R40:

Possible risk of irreversible effects

R41:

Risk of serious damage to eyes

R42:

May cause sensitisation by inhalation

R43:

May cause sensitisation 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 breast fed babies

R65:

Harmful: may cause lung damage if swallowed