Fipronil

Also known as: 5-Amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-[(trifluoromethyl)sulfinyl]-1H-pyrazole-3-carbonitrile, Regent, Termidor, Goliath, M&B 46030, Fluocyanobenpyrazole, Prince

Fipronil (CAS 120068-37-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H4Cl2F6N4OS and a molecular weight of 437.148 g/mol. Key properties include a melting point of 200-201°C, a boiling point of 510.1±50.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 262.3±30.1 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 120068-37-3
Jingsj CID: J-38534-3
Molecular Formula: C₁₂H₄Cl₂F₆N₄OS
Molecular Weight: 437.148 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	200-201°C
Boiling Point	510.1±50.0 °C at 760 mmHg
Density	1.9±0.1 g/cm3
Flash Point	262.3±30.1 °C
Exact Mass	435.938690
PSA	103.91000
LogP	4.76
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.618

GHS Safety & Compliance

Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger

H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H331 — Toxic if inhaled
H319 — Causes serious eye irritation
H372 — Causes damage to organs through prolonged exposure
H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Fipronil?

The CAS number of Fipronil is 120068-37-3.

What are the molecular formula and molecular weight of Fipronil?

Fipronil has molecular formula C12H4Cl2F6N4OS and molecular weight 437.148 g/mol.

Is Fipronil hazardous?

Fipronil has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.

What are the upstream and downstream products of Fipronil?

For Fipronil, Upstream Products: Fipronil sulfide, Sodium trifluoromethanesulfinate, 5-Amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile; Downstream Products: Fipronil sulfide, 1,4-Dioxane.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Fipronil (CAS 120068-37-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38534-3 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.