

| Molecular formula: | Cl2 |
| CAS No: | 7782-50-5 |
| Physical appearance: | light greenish-yellow gas with an irritating odour |
| Melting point: | -101 C |
| Boiling point: | -34 C |
| Other information: | Toxic by inhalation, ingestion and through skin contact. Inhalation can cause serious lung damage and may be fatal. 1000ppm (0.1%) is likely to be fatal after a few deep breaths, and half that concentration fatal after a few minutes. May irritate or burn skin. |

| Other names: | chlorine oxide |
| Molecular formula: | Cl O2 |
| CAS No: | 10049044 |
| Melting point: | -59.5 C |
| Boiling point: | 9.9 C |
| Other information: | Corrosive, Severe respiratory and eye irritant. |