Deltamethrin

Also known as: Decamethrin, Dekametrin, (S)-cyano(3-phenoxyphenyl)methyl (1R,3R)-3-(2,2-dibromoethenyl)-2,2-dimethylcyclopropane-1-carboxylate, (S)-α-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, (S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, [1R-[1alpha(S*),3alpha]]-Cyano(3-phenoxyphenyl)methyl 3-(2,2-dibromomethenyl)-2,2-dimethylcyclopropanedicarboxylate, MFCD00870122, EINECS 258-256-6

Deltamethrin (CAS 52918-63-5) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C22H19Br2NO3 and a molecular weight of 505.199 g/mol. Key properties include a melting point of 98ºC, a boiling point of 535.8±50.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 277.8±30.1 °C. It is classified under GHS with signal word Danger and hazard statements H300, H312 — Harmful 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.: 52918-63-5
Jingsj CID: J-28988-5
Molecular Formula: C₂₂H₁₉Br₂NO₃
Molecular Weight: 505.199 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	98ºC
Boiling Point	535.8±50.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	277.8±30.1 °C
Exact Mass	502.973145
PSA	59.32000
LogP	6.20
Vapor Pressure	0.0±1.4 mmHg at 25°C
Refractive Index	1.653

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger

H300
H312 — Harmful in contact with skin
H331 — Toxic if inhaled
H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information	[1]. Kavlock R, et al. Toxicity studies with decamethrin, a synthetic pyrethroid insecticide. J Environ Pathol Toxicol. 1979;2(3):751-765. [2]. Ray DE. An EEG investigation of decamethrin-induced choreoathetosis in the rat. Exp Brain Res. 1980;38(2):221-227.

Customs & Trade Information

HS Code	2926909035

Frequently Asked Questions

What is the CAS number of Deltamethrin?

The CAS number of Deltamethrin is 52918-63-5.

What are the molecular formula and molecular weight of Deltamethrin?

Deltamethrin has molecular formula C22H19Br2NO3 and molecular weight 505.199 g/mol.

Is Deltamethrin hazardous?

Deltamethrin has GHS signal word Danger and hazard statements H300; H312 — Harmful in contact with skin; H331 — Toxic if inhaled.

What are the upstream and downstream products of Deltamethrin?

For Deltamethrin, Downstream Products: (1R-cis)-3-(2,2-dibromoethenyl)-2,2-dimethylcyclopropane carboxylic acid, alpha-Hydroxy-3-phenoxybenzeneacetonitrile.

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. "Deltamethrin (CAS 52918-63-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28988-5 (accessed 2026-11-06).

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