Substance profile
Chloridazon
Chloridazon is a colorless solid and is odorless.
01 · Identification
What Chloridazon is
Chloridazon is a colorless solid and is odorless. Its molecular formula is C10H8ClN3O and its molecular weight is 221.64 g/mol. It melts at 206 °C.
Under the GHS it carries the signal word Warning.
Other names for Chloridazon
- chloridazon (ISO)
- 5-amino-4-chloro-2-phenylpyridazine-3-(2H)-one
- pyrazon
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P261, P272, P273, P280, P313, P333, P391, P501
03 · Physical and chemical properties
Chloridazon properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 206 °C (402.8 °F) | HSDB | |
| 190 °C (374 °F) | range, midpoint shown | HSDB | |
| 200 °C (392 °F) | range, midpoint shown | HSDB | |
| Density | 1.54 g/cm³ | at 20 °C | HSDB |
| Solubility | IN WATER 400 MG/L AT 20 °C; IN METHANOL 34 G/KG AT 20 °C; IN ACETONE 28 G/KG AT 20 °C; IN BENZENE 0.7 G/KG AT 20 °C | at 20 °C | HSDB |
| IN CYCLOHEXANE GREATER THAN 0.01 G/100 G @ 20 °C; IN CHLOROFORM 0.21 G/100 G @ 20 °C; IN ETHER 0.07 G/100 G @ 20 °C | at 20 °C | HSDB | |
| In distilled water, 340 mg/L at 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 4.5e-7 mmHg | at 20 °C | HSDB |
| 4.5e-7 mmHg | Haz-Map | ||
| Corrosivity | NONCORROSIVE | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.