Tralomethrin

Also known as: (S)-cyano(3-phenoxyphenyl)methyl (1R,3S)-2,2-dimethyl-3-(1,2,2,2-tetrabromoethyl)cyclopropanecarboxylate, (S)-α-cyano-3-phenoxybenzyl (1R,3S)-2,2-dimethyl-3-[(RS)-1,2,2,2-tetrabromoethyl]cyclopropanecarboxylate, Bengal Fire Ant Killer, SAGA, Scout, Scout X-tra, Tracker, Tralomethrine, Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(1,2,2,2-tetrabromoethyl)-, cyano(3-phenoxyphenyl)methyl ester, EINECS 266-493-1

Tralomethrin (CAS 66841-25-6) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C22H19Br4NO3 and a molecular weight of 665.00700 g/mol. Key properties include a melting point of 138-148ºC, a boiling point of 594.316ºC at 760 mmHg, a density of 1.849g/cm3 and a flash point of 313.231ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 66841-25-6
Jingsj CID: J-1377018-7
Molecular Formula: C₂₂H₁₉Br₄NO₃
Molecular Weight: 665.00700 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	138-148ºC
Boiling Point	594.316ºC at 760 mmHg
Density	1.849g/cm3
Flash Point	313.231ºC
Exact Mass	660.81000
PSA	59.32000
LogP	7.46098
Refractive Index	1.641
Storage Conditions	0-6°C

GHS Safety & Compliance

Irritant / Environmental HazardSignal word: Warning

H302 — Harmful if swallowed
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Tralomethrin?

The CAS number of Tralomethrin is 66841-25-6.

What are the molecular formula and molecular weight of Tralomethrin?

Tralomethrin has molecular formula C22H19Br4NO3 and molecular weight 665.00700 g/mol.

Is Tralomethrin hazardous?

Tralomethrin has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

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. "Tralomethrin (CAS 66841-25-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377018-7 (accessed 2026-11-06).

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