Substance profile
Fipronil
Fipronil is a white solid.
01 · Identification
What Fipronil is
Fipronil is a white solid. Its molecular formula is C12H4Cl2F6N4OS and its molecular weight is 437.1 g/mol. It melts at 201 °C.
Under the GHS it carries the signal word Danger.
Other names for Fipronil
- fipronil (ISO)
- (±)-5-amino-1-(2,6-dichloro-α,α,α-trifluoro-para-tolyl)-4-trifluoromethylsulfinyl-pyrazole-3-carbonitrile
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 |
|---|---|
| H331 | Toxic if inhaled. |
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H372 | Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P270, P271, P273, P280, P301, P302, P304, P310, P314, P330, P352, P391, P501
03 · Physical and chemical properties
Fipronil 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 |
|---|---|---|---|
| Melting point | 201 °C (393.8 °F) | ICSC | |
| 200.5 °C (392.9 °F) | range, midpoint shown | HSDB | |
| Density | 1.5515 g/cm³ | range, midpoint shown, at 20 °C | HSDB |
| Solubility | In water, 2 mg/L | HSDB | |
| In water, 1.9 mg/L (pH 5), 2.4 mg/L (pH 9), 1.9 mg/L (distilled), all at 20 °C | at 20 °C | HSDB | |
| In organic solvents (g/L at 20 °C): acetone 545.9, dichloromethane 22.3, hexane 0.028, toluene 3.0 | at 20 °C | HSDB | |
| Vapor pressure | 2.78e-9 mmHg | at 25 °C | HSDB |
| Vapor pressure at 20 °C: negligible | at 20 °C | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Fipronil
Storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong oxidizing agents.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Fipronil in the storage compatibility matrix →