| Spanish | English |
| Causa R | Radical Cause |
| conmutador T-R | transmit-receive switch |
| Gris se deletrea "G-R-A-Y" en Estados Unidos | Gray is spelled G-R-A-Y in the United States |
| informe M.A.D.R.I.D | M.A.D.R.I.D report |
| informe M.A.D.R.I.D | main assessment and description report for internal debate |
| R52 | harmful to aquatic organisms |
| R37/38 | irritating to respiratory system and skin |
| R30 | can become highly flammable in use |
| R34 | causes burns |
| R41 | risk of serious damage to eyes |
| R3 | extreme risk of explosion by shock, friction, fire or other sources of ignition |
| R24 | toxic in contact with skin |
| R12 | extremely flammable |
| R14/15 | reacts violently with water, liberating highly flammable gases |
| R4 | forms very sensitive explosive metallic compounds |
| R10 | flammable |
| R5 | heating may cause an explosion |
| R39/24 | toxic:danger of very serious irreversible effects in contact with skin |
| R39/23 | toxic:danger of very serious irreversible effects through inhalation |
| R39/23/24/25 | toxic:danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed |
| R39/28 | very toxic:danger of very serious irreversible effects if swallowed |
| R39/27/28 | very toxic:danger of very serious irreversible effects in contact with skin and if swallowed |
| R39/26 | very toxic:danger of very serious irreversible effects through inhalation |
| R39/26/27 | very toxic:danger of very serious irreversible effects through inhalation and in contact with skin |
| R9 | explosive when mixed with combustible material |
| R46 | may cause heritable genetic damage |
| R38 | irritating to skin |
| R15 | contact with water liberates highly flammable gases |
| R17 | spontaneously flammable in air |
| R32 | contact with acids liberates very toxic gas |
| R36/37 | irritating to eyes and respiratory system |
| R36/38 | irritating to eyes and skin |
| R23 | toxic by inhalation |
| R23/24/25 | toxic by inhalation, in contact with skin and if swallowed |
| R31 | contact with acid liberates toxic gas |
| R28 | very toxic if swallowed |
| R42 | may cause sensitization by inhalation |
| R27 | very toxic in contact with skin |
| R20 | harmful by inhalation |
| R20/21/22 | harmful by inhalation, in contact with skin and if swallowed |
| R40 | possible risks of irreversible effects |
| R40/20/21 | harmful:possible risk of irreversible effects through inhalation and in contact with skin |
| R40/20/22 | harmful:possible risk of irreversible effects through inhalation and if swallowed |
| R40/21/22 | harmful:possible risk of irreversible effects in contact with skin and if swallowed |
| R51 | toxic to aquatic organisms |
| R21 | harmful in contact with skin |
| R48 | danger of serious damage to health by prolonged exposure |
| R48/24/25 | toxic:danger of serious damage to health by prolonged exposure in contact with skin and if swallowed |
| R48/23/24 | toxic:danger of serious damage to health by prolonged exposure through inhalation and in contact with skin |
| R48/23/25 | toxic:danger of serious damage to health by prolonged exposure through inhalation and if swallowed |
| R48/20/21 | harmful:danger of serious damage to health by prolonged exposure through inhalation and in contact with skin |
| R48/20/22 | harmful:danger of serious damage to health by prolonged exposure through inhalation and if swallowed |
| R48/21/22 | harmful:danger of serious damage to health by prolonged exposure in contact with skin and if swallowed |
| R48/25 | toxic:danger of serious damage to health by prolonged exposure if swallowed |
| R25 | toxic if swallowed |
| R13 | extremely flammable liquefied gas |
| R26 | very toxic by inhalation |
| R26/27 | very toxic by inhalation and in contact with skin |
| R26/27/28 | very toxic by inhalation, in contact with skin and if swallowed |
| R26/28 | very toxic by inhalation and if swallowed |
| R16 | explosive when mixed with oxidizing substances |
| R54 | toxic to flora |
| R22 | harmful if swallowed |
| R48/22 | harmful:danger of serious damage to health by prolonged exposure if swallowed |
| R48/21 | harmful:danger of serious damage to health by prolonged exposure in contact with skin |
| R48/20/21/22 | harmful:danger of serious damage to health by prolonged exposure through inhalation, in contact with skin and if swallowed |
| R48/20 | harmful:danger of serious damage to health by prolonged exposure through inhalation |
| R48/23/24/25 | toxic:danger of serious damage to health by prolonged exposure through inhalation, in contact with skin and if swallowed |
| R48/23 | toxic:danger of serious damage to health by prolonged exposure through inhalation |
| R48/24 | toxic:danger of serious damage to health by prolonged exposure in contact with skin |
| R21/22 | harmful in contact with skin and if swallowed |
| R55 | toxic to fauna |
| R40/22 | harmful:possible risk of irreversible effects if swallowed |
| R40/21 | harmful:possible risk of irreversible effects in contact with skin |
| R40/20/21/22 | harmful:possible risk of irreversible effects through inhalation, in contact with skin and if swallowed |
| R40/20 | Harmful:possible risk of irreversible effects through inhalation |
| R20/22 | harmful by inhalation and if swallowed |
| R20/21 | Harmful by inhalation and in contact with skin |
| R27/28 | very toxic in contact with skin and if swallowed |
| R42/43 | may cause sensitization by inhalation and skin contact |
| R53 | may cause long-term adverse effects in the aquatic environment |
| R6 | explosive with or without contact with air |
| R23/25 | toxic by inhalation and if swallowed |
| R23/24 | toxic by inhalation and in contact with skin |
| R29 | contact with water liberates toxic gas |
| R36/37/38 | irritating to eyes, respiratory system and skin |
| R36 | irritating to eyes |
| R56 | toxic to soil organisms |
| R15/29 | contact with water liberates toxic, highly flammable gas |
| R47 | may cause birth defects |
| R44 | risk of explosion if heated under confinement |
| R7 | may cause fire |
| R39/26/27/28 | very toxic:danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed |
| R39/26/28 | very toxic:danger of very serious irreversible effects through inhalation and if swallowed |
| R39/25 | toxic:danger of very serious irreversible effects if swallowed |
| R39/27 | very toxic:danger of very serious irreversible effects in contact with skin |
| R39/23/25 | toxic:danger of very serious irreversible effects through inhalation and if swallowed |
| R39/23/24 | toxic:danger of very serious irreversible effects through inhalation and in contact with skin |
| R39/24/25 | toxic:danger of very serious irreversible effects in contact with skin and if swallowed |
| R39 | danger of very serious irreversible effects |
| R49 | may cause cancer by inhalation |
| R50 | very toxic to aquatic organisms |
| R18 | in use, may form flammable/explosive vapour-air mixture |
| R14 | reacts violently with water |
| R24/25 | toxic in contact whit skin and if swallowed |
| R1 | explosive when dry |
| R2 | risk of explosion by shock, friction, fire or other sources of ignition |
| R33 | danger of cumulative effects |
| R35 | causes severe burns |
| R59 | dangerous for the ozone layer |
| R37 | irritating to respiratory system |
| R45 | may cause cancer |
