Substance profile
Omethoate
Omethoate is a colorless liquid with a mercaptan-like odor.
01 · Identification
What Omethoate is
Omethoate is a colorless liquid with a mercaptan-like odor. Its molecular formula is C5H12NO4PS and its molecular weight is 213.19 g/mol. It boils at 135 °C, melts at -28 °C.
Under the GHS it carries the signal word Danger.
Other names for Omethoate
- omethoate (ISO)
- O,O-dimethyl S-methylcarbamoylmethyl 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. |
Precautionary statements: P270, P273, P280, P301, P302, P310, P312, P330, P352, P391, P501
03 · Physical and chemical properties
Omethoate 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 | 135 °C (275 °F) | approximate | HSDB |
| Melting point | -28 °C (-18.4 °F) | HSDB | |
| Density | 1.32 g/cm³ | HSDB | |
| Solubility | Readily soluble in alcohols, acetone, and many hydrocarbons. Slightly soluble in diethyl ether. Almost insoluble in petroleum ether. | HSDB | |
| Soluble in toluene. Miscible in dichloromethane, 2-propanol. Nearly insoluble in n-hexane. | HSDB | ||
| Readily soluble in water. | HSDB | ||
| Vapor pressure | 0.0000248 mmHg | at 20 °C | HSDB |
| 0.0000248 mmHg | Haz-Map | ||
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Omethoate
Storage conditions
Rooms used for storage only should be soundly constructed & fitted with secure locks. Floors should be kept clear & pesticides clearly identified. If repacking is carried out in storage rooms, adequate light should be available; floors should be impervious & sound ... . /Pesticides/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
... Incompatible with alkaline materials.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Omethoate in the storage compatibility matrix →