Substance profile
Fenamiphos
Fenamiphos is colorless crystals.
01 · Identification
What Fenamiphos is
Fenamiphos is colorless crystals. Its molecular formula is C13H22NO3PS and its molecular weight is 303.36 g/mol. It boils at 450 °C, melts at 49 °C.
Under the GHS it carries the signal word Danger.
Other names for Fenamiphos
- fenamiphos (ISO)
- ethyl-4-methylthio-m-tolyl isopropyl phosphoramidate
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 |
|---|---|
| H330 | Fatal if inhaled. |
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P264, P270, P271, P273, P280, P301, P302, P304, P305, P310, P313, P330, P337, P338, P352, P391, P501
03 · Physical and chemical properties
Fenamiphos 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 | 450 °C (842 °F) | at 760 mmHg | DOE PAC |
| Decomposes (NTP, 1992) | decomposes | CAMEO | |
| decomposes | decomposes | OSHA | |
| Melting point | 49 °C (120.2 °F) | HSDB | |
| 49.44 °C (121 °F) | NIOSH | ||
| Density | 1.14 g/cm³ | NIOSH | |
| 1.15 g/cm³ | ICSC | ||
| Solubility | In water, 400 mg/L at 20 °C | at 20 °C | HSDB |
| In water, 329 mg/L at 20 °C | at 20 °C | HSDB | |
| In dichloromethane, isopropanol, toluene > 200; hexane 10-20 (all in g/L, 20 °C) | at 20 °C | HSDB | |
| Vapor pressure | 0.00005 mmHg | NIOSH | |
| 0.000009 mmHg | at 20 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Fenamiphos
Storage conditions
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Well closed.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
May hydrolyze under alkaline conditions.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Organothiophosphates, such as FENAMIPHOS, 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 Fenamiphos in the storage compatibility matrix →