Substance profile
Fenchlorphos
Fenchlorphos is colorless crystals with a mercaptan odor.
01 · Identification
What Fenchlorphos is
Fenchlorphos is colorless crystals with a mercaptan odor. Its molecular formula is C8H8Cl3O3PS and its molecular weight is 321.5 g/mol. It melts at 41 °C.
Under the GHS it carries the signal word Warning.
Other names for Fenchlorphos
- fenchlorphos (ISO)
- O,O-dimethyl O-2,4,5-trichlorophenyl 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 |
|---|---|
| H312 | Harmful in contact with skin. |
| H302 | Harmful 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, P312, P330, P352, P391, P501
03 · Physical and chemical properties
Fenchlorphos 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 | 97 °C (206.6 °F) | at 0.0097508 mmHg (reduced pressure) | HSDB |
| BP: decomposes. | decomposes | HSDB | |
| Decomposes | decomposes | NIOSH | |
| Melting point | 41 °C (105.8 °F) | HSDB | |
| 41.11 °C (106 °F) | NIOSH | ||
| Density | 1.48 g/cm³ | ICSC | |
| 1.485 g/cm³ | at 25 °C | HSDB | |
| 1.49 g/cm³ | at 25 °C | CAMEO | |
| Solubility | Readily sol in most organic solvents: in acetone 908, chloroform 347, toluene 592, xylene 503, methanol 25, kerosene 37 (all in g/100 ml) | HSDB | |
| water solubility = 1 mg/l @ 20 °C | at 20 °C | HSDB | |
| IN WATER: 0.004 G/100 ML @ 25 °C; FREELY SOL IN CARBON TETRACHLORIDE, ETHER, METHYLENE CHLORIDE | at 25 °C | HSDB | |
| Vapor pressure | 0.0008 mmHg | at 25 °C | HSDB |
| Lower explosive limit (LEL) | Noncombustible Solid | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Fenchlorphos
Storage conditions
... MUST BE STORED IN ITS SEALED ORIGINAL CONTAINERS, IN WELL-AIRED, FRESH & DRYSTOREHOUSES OR IN SHADED & POSSIBLY WELL-AIRED PLACES. IT IS RECOMMENDED THAT THE PRODUCT'S TEMP ... NOT EXCEED 25-30 °C, & KEEP ... AWAY FROM SOURCES OF HEAT FREE FLAMES OR SPARK-GENERATING EQUIPMENT. CONTAINERS MUST BE STACKED IN SUCH A WAY AS TO PERMIT FREE CIRCULATION OF AIR ... AT BOTTOM & INSIDE OF PILES. STORAGE AREAS MUST BE LOCATED AT SUITABLE DISTANCE FROM INHABITED BUILDINGS, ANIMAL SHELTERS, & FOOD STORES; MOREOVER, THEY MUST BE INACCESSIBLE TO UNAUTHORIZED PERSONS, CHILDREN, & DOMESTIC ANIMALS. /PROTHOATE/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Strong oxidizers.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
RONNEL is non-flammable and non-combustible. Decomposes with heating to evolve toxic and corrosive vapors (hydrogen chloride, phosphorus oxides, sulfur oxides). Incompatible with strong oxidizing agents.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Fenchlorphos in the storage compatibility matrix →