Substance profile
Imazapyr
Imazapyr is a clear, slightly viscous, pale yellow to dark green aqueous liquid with a slight ammonical odor.
01 · Identification
What Imazapyr is
Imazapyr is a clear, slightly viscous, pale yellow to dark green aqueous liquid with a slight ammonical odor. Its molecular formula is C13H15N3O3 and its molecular weight is 261.28 g/mol. It melts at 171 °C.
Under the GHS it carries the signal word Warning.
Other names for Imazapyr
- imazapyr (ISO)
- 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridine carboxylate
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 |
|---|---|
| H319 | Causes serious eye irritation. |
| H412 | Harmful to aquatic life with long lasting effects. |
Precautionary statements: P264, P273, P280, P305, P313, P337, P338, P501
03 · Physical and chemical properties
Imazapyr 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 | 171 °C (339.8 °F) | HSDB | |
| MP: 160-180 (decomposes) | decomposes, Imazapyr isopropylamine salt | HSDB | |
| Density | 0.34 g/cm³ | HSDB | |
| Solubility | In acetone 3.39, dimethyl sulfoxide 47.1, hexane 0.00095, methanol 10.5, dichloromethane 8.72, toluene 0.180 (25 °C, all in g/100 mL) | HSDB | |
| In water, 1.13X10+4 mg/L at 25 °C; 9.74 g/L at 15 °C | at 25 °C | HSDB | |
| Vapor pressure | 97.508 mmHg | below this value, at 60 °C | HSDB |
| Corrosivity | Corrosive to iron, mild steel, and brass, but not to #304 stainless steel | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.