| Molecular Formula | C13H12ClN3O |
| Molar Mass | 261.71 |
| Physical and Chemical Properties | Red-orange to brown paste, refined with petroleum ether to acicular crystals. The melting point was 102 °c and the boiling point was 238 °c/1.6kPa. Soluble in water and ethanol, insoluble in ether and benzene. It is easy to decompose when exposed to light and high temperature, and the impact will cause explosion. Has a stimulating effect on the eyes and respiratory tract. Diazo solution is very sensitive to acid and alkali. |
| WGK Germany | 3 |