Substance profile
Fonofos
Fonofos is a light yellow liquid with an aromatic odor.
01 · Identification
What Fonofos is
Fonofos is a light yellow liquid with an aromatic odor. Its molecular formula is C10H15OPS2 and its molecular weight is 246.3 g/mol. It boils at 380 °C, melts at 30 °C, is miscible with water.
Under the GHS it carries the signal word Danger.
Other names for Fonofos
- fonofos (ISO)
- O-ethyl phenyl ethylphosphonodithioate
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 |
|---|---|
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
| 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
Fonofos 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 | 380 °C (716 °F) | at 760 mmHg | DOE PAC |
| 130 °C (266 °F) | at 0.1 mmHg (reduced pressure) | HSDB | |
| Melting point | 30 °C (86 °F) | ICSC | |
| Density | 1.15 g/cm³ | NIOSH | |
| 1.16 g/cm³ | at 25 °C | HSDB | |
| Solubility | Miscible with ... acetone, ethanol, kerosene, methyl isobutyl ketone, xylene. | HSDB | |
| Miscible with organic solvents. | HSDB | ||
| In water, 15.7 mg/l @ 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 337500 mmHg | at 25 °C | HSDB |
| 0.0002 mmHg | at 25 °C | NIOSH | |
| 0.00021 mmHg | at 25 °C | CAMEO | |
| Flash point | 94 °C (201.2 °F) | ICSC | |
| 93.33 °C (200 °F) | above this value | HSDB | |
| 93.89 °C (201 °F) | above this value | NIOSH | |
| Lower explosive limit (LEL) | Class IIIB Combustible Liquid: Fl.P. at or above 200 °F. | NIOSH | |
| Corrosivity | Corrosive to steel | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Fonofos
Storage conditions
Separated from food and feedstuffs. Keep in a well-ventilated room.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Substance is hydrolyzed in contact with strong acids and alkalis.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Organothiophosphates, such as FONOFOS, 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 Fonofos in the storage compatibility matrix →