Substance profile
Azinphos-Ethyl
Azinphos-Ethyl is colorless needles.
01 · Identification
What Azinphos-Ethyl is
Azinphos-Ethyl is colorless needles. Its molecular formula is C12H16N3O3PS2 and its molecular weight is 345.4 g/mol. It melts at 53 °C, is soluble in water.
Under the GHS it carries the signal word Danger.
Other names for Azinphos-Ethyl
- azinphos-ethyl (ISO)
- O,O-diethyl 4-oxobenzotriazin-3-ylmethyl phosphorodithioate
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 |
|---|---|
| H300 | Fatal if swallowed. |
| H311 | Toxic 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, P330, P352, P391, P501
03 · Physical and chemical properties
Azinphos-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 |
|---|---|---|---|
| Boiling point | 111 °C (231.8 °F) | at 0.001 mmHg (reduced pressure) | HSDB |
| 111.11 °C (232 °F) | at 0.001 mmHg (reduced pressure) | CAMEO | |
| Melting point | 53 °C (127.4 °F) | HSDB | |
| 52.78 °C (127 °F) | CAMEO | ||
| Density | 1.284 g/cm³ | at 20 °C | HSDB |
| Solubility | SOL IN ORG SOLVENTS EXCEPT PETROLEUM ETHER AND ALIPHATIC HYDROCARBONS | HSDB | |
| Soluble in 2-propanol. | HSDB | ||
| At 20 °C: n-hexane, 2-5 g/L; isopropanol, 20-50 g/L; dichloromethane, >1,000 g/L; toluene, >1,000 g/L | at 20 °C | HSDB | |
| Vapor pressure | 2400 mmHg | at 20 °C | HSDB |
| 2.2e-7 mmHg | at 20 °C | CAMEO | |
| 0.0000032 mmHg | at 20 °C | DOE PAC | |
| 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 Azinphos-Ethyl
Storage conditions
Store in original container, preferably in locked storage, away from children, food, or feed.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Contact with oxidizers may cause the release of phosphorous oxides. Contact with strong reducing agents, such as hydrides, may cause the formation of flammable and toxic phosphine gas.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
The BPS Pesticide incident in Helena resulted in an explosion and death of three firemen. The burning of a 1,000 pound sack of Azinphos Methyl or the flashing of Maneb which was present on the facility may have caused the explosion. Azinphos Ethyl may behave similarly. At elevated temperatures, it will decompose generating toxic gases.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Azinphos-Ethyl in the storage compatibility matrix →