Substance profile
Pirimiphos-Ethyl
Pirimiphos-Ethyl is a straw-colored liquid with a technical grade has a mercaptan-like odor.
01 · Identification
What Pirimiphos-Ethyl is
Pirimiphos-Ethyl is a straw-colored liquid with a technical grade has a mercaptan-like odor. Its molecular formula is C13H24N3O3PS and its molecular weight is 333.39 g/mol. It melts at 16.5 °C.
Under the GHS it carries the signal word Danger.
Other names for Pirimiphos-Ethyl
- pirimiphos-ethyl (ISO)
- O,O-diethyl O-2-diethylamino-6-methylpyrimidin-4-yl phosphorothioate
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 |
|---|---|
| H301 | Toxic if swallowed. |
| H312 | Harmful in contact with skin. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P270, P273, P280, P301, P302, P310, P312, P330, P352, P391, P501
03 · Physical and chemical properties
Pirimiphos-Ethyl 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 | 16.5 °C (61.7 °F) | range, midpoint shown | HSDB |
| Density | 1.14 g/cm³ | at 20 °C | HSDB |
| Solubility | Miscible with most organic solvents | HSDB | |
| In water, 2.3 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.00029 mmHg | at 25 °C | HSDB |
| Flash point | 45 °C (113 °F) | Pensky-Martin closed cup | HSDB |
| Corrosivity | Corrosive to iron & unprotected tinplate | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Pirimiphos-Ethyl
Storage conditions
Pesticides of any degree of toxicity should be transported in containers which are ... leak-proof & not easily damaged. /Pesticides/
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Organophosphates, such as PIRIMIFOS-ETHYL, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Pirimiphos-Ethyl in the storage compatibility matrix →