Substance profile
Oxydemeton-methyl
Oxydemeton-methyl is a colorless liquid.
01 · Identification
What Oxydemeton-methyl is
Oxydemeton-methyl is a colorless liquid. It melts at -20 °C, is soluble in water.
Under the GHS it carries the signal word Danger.
Other names for Oxydemeton-methyl
- S-2-(ethylsulphinyl)ethyl O,O-dimethyl 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 |
|---|---|
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H400 | Very toxic to aquatic life. |
Precautionary statements: P270, P273, P280, P301, P302, P310, P330, P352, P391, P501
03 · Physical and chemical properties
Oxydemeton-methyl 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 | 106 °C (222.8 °F) | at 0.01 mmHg (reduced pressure) | HSDB |
| 106.11 °C (223 °F) | at 0.01 mmHg (reduced pressure) | CAMEO | |
| Melting point | -20 °C (-4 °F) | below this value | HSDB |
| -10 °C (14 °F) | below this value | CAMEO | |
| Density | 1.289 g/cm³ | at 20 °C | HSDB |
| Solubility | Soluble in common organic solvents except petroleum ether | HSDB | |
| Completely miscible with water. | HSDB | ||
| 10 to 50 mg/mL at 61 °F (NTP, 1992) | at 16.11 °C | CAMEO | |
| Vapor pressure | 28500 mmHg | at 20 °C | HSDB |
| 0.0000285 mmHg | Haz-Map | ||
| 3.8e-05 millibar at 68 °F (NTP, 1992) | at 20 °C | CAMEO | |
| Flash point | 21.67 °C (71 °F) | below this value | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Oxydemeton-methyl
Storage conditions
Store in original container, preferably in a locked area, away from children, food, feed.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Organophosphates such as OXYDEMETON METHYL 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 Oxydemeton-methyl in the storage compatibility matrix →