Orange harmful or irritant (Xn, Xi)
Orange harmful or irritant (Xn, Xi)
Harmful (Xn) or irritant (Xi), under the old European system.
What it looks like
A diagonal cross like a letter X, black on an orange-yellow square, with Xn or Xi beside it.
What it means
The old catch-all, replaced by the GHS exclamation mark. The X shape is why the letters matter: Xn meant harmful if swallowed, inhaled or absorbed, while Xi meant it irritates skin, eyes or airways without lasting damage. Several substances that carried Xn were reclassified upwards when CLP arrived and now bear the health hazard pictogram instead, so an old orange X is not evidence that the current classification is mild.
Defined by Directive 67/548/EEC (repealed). Where a symbol differs between standards, the difference is described above rather than resolved — both versions are in circulation on real labels.
Other hazard warnings symbols
| Symbol | Means |
|---|---|
| Exploding bomb (GHS01) | Explosive, self-reactive, or an organic peroxide that can explode. |
| Flame (GHS02) | Flammable — or a substance that heats up, ignites in air, or gives off flammable gas when wet. |
| Flame over circle (GHS03) | Oxidising — it will feed a fire, including one that has nothing else to burn with. |
| Gas cylinder (GHS04) | Gas under pressure — compressed, liquefied, refrigerated or dissolved. |
| Corrosion (GHS05) | Causes severe skin burns and eye damage, or corrodes metal. |
| Skull and crossbones (GHS06) | Acute toxicity — fatal or toxic in small amounts by swallowing, skin contact or inhalation. |
| Exclamation mark (GHS07) | Irritant, skin sensitiser, harmful if swallowed or inhaled, or may cause drowsiness — the lower-severity hazards. |
| Health hazard (GHS08) | Serious long-term health effects — cancer, genetic damage, harm to fertility or the unborn child, organ damage, asthma from inhalation, or fatal if swallowed and it enters the airways. |
| Environment (GHS09) | Hazardous to the aquatic environment — toxic to fish and other water life. |
| Orange explosive (E) | Explosive, under the old European system. |
| Orange oxidising (O) | Oxidising agent, under the old European system. |
| Orange flammable (F, F+) | Highly flammable (F) or extremely flammable (F+), under the old European system. |
| Orange toxic (T, T+) | Toxic (T) or very toxic (T+), under the old European system. |
| Orange corrosive (C) | Corrosive, under the old European system. |
| Orange dangerous for the environment (N) | Dangerous for the environment, under the old European system. |
| NFPA 704 fire diamond | A US placard telling emergency responders how a stored chemical behaves in a fire. |
| Biohazard | Biological material that can cause disease — blood, cultures, clinical waste. |
| Radiation trefoil | Ionising radiation — a radioactive source or a device producing radiation. |
| Laser radiation | Laser radiation — do not look into the beam. |
Common questions
- What does the orange harmful or irritant (xn, xi) symbol mean?
- Harmful (Xn) or irritant (Xi), under the old European system.
- What does it look like?
- A diagonal cross like a letter X, black on an orange-yellow square, with Xn or Xi beside it.
Related pages
- Exclamation mark (GHS07) Irritant, skin sensitiser, harmful if swallowed or inhaled, or may cause drowsiness — the lower-severity hazards.
- Health hazard (GHS08) Serious long-term health effects — cancer, genetic damage, harm to fertility or the unborn child, organ damage, asthma from inhalation, or fatal if swallowed and it enters the airways.
- Exploding bomb (GHS01) Explosive, self-reactive, or an organic peroxide that can explode.
- Flame (GHS02) Flammable — or a substance that heats up, ignites in air, or gives off flammable gas when wet.
- Flame over circle (GHS03) Oxidising — it will feed a fire, including one that has nothing else to burn with.
- Gas cylinder (GHS04) Gas under pressure — compressed, liquefied, refrigerated or dissolved.
- Corrosion (GHS05) Causes severe skin burns and eye damage, or corrodes metal.
- Skull and crossbones (GHS06) Acute toxicity — fatal or toxic in small amounts by swallowing, skin contact or inhalation.
- Exclamation mark (GHS07) Irritant, skin sensitiser, harmful if swallowed or inhaled, or may cause drowsiness — the lower-severity hazards.
- Health hazard (GHS08) Serious long-term health effects — cancer, genetic damage, harm to fertility or the unborn child, organ damage, asthma from inhalation, or fatal if swallowed and it enters the airways.
- Environment (GHS09) Hazardous to the aquatic environment — toxic to fish and other water life.
- Orange explosive (E) Explosive, under the old European system.
Sources
- Official vendor product documentation — At One Place