Substance profile
Clomazone
Clomazone is a clear colorless to light brown viscous liquid.
01 · Identification
What Clomazone is
Clomazone is a clear colorless to light brown viscous liquid. Its molecular formula is C12H14ClNO2 and its molecular weight is 239.7 g/mol. It boils at 275 °C, melts at 25 °C.
Under the GHS it carries the signal word Warning.
Other names for Clomazone
- clomazone (ISO)
- 2-(2-chlorobenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one
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 |
|---|---|
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P270, P271, P273, P301, P304, P312, P330, P391, P501
03 · Physical and chemical properties
Clomazone 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 |
|---|---|---|---|
| Boiling point | 275 °C (527 °F) | HSDB | |
| Melting point | 25 °C (77 °F) | HSDB | |
| Density | 1.192 g/cm³ | at 25 °C | HSDB |
| Solubility | Readily soluble in acetonitrile, hexane, dioxane, xylene | HSDB | |
| Miscible in acetone, chloroform, cyclohexanone, methylene chloride, methanol, toluene, heptane, and DMF | HSDB | ||
| In water, 1,100 ppm at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.00014 mmHg | OSHA | |
| 0.00014 mmHg | at 25 °C | HSDB | |
| Flash point | 41.94 °C (107.5 °F) | range, midpoint shown | HSDB |
| 72.5 °C (162.5 °F) | range, midpoint shown | HSDB | |
| Vapor density | 1.192 (air = 1) | at 25 °C | OSHA |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Clomazone
Storage conditions
Store in a cool, well-ventilated, secure area, out of the reach of children and animals.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Clomazone in the storage compatibility matrix →