Dimethrin

Also known as: Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)-, (2,4-dimethylphenyl)methyl ester, Dimethrin, Dimethrin [ANSI], Dimethrine, Dimetrin, ENT-21170, NSC 15731, NSC15731, 2,2-Dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid 2,4-dimethylbenzyl ester, 2,4-Dimethylbenzylchrysanthemumate, 2,4-dimethylbenzyl (1RS)-cis-trans-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate, (2,4-dimethylphenyl)methyl 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)cyclopropanecarboxylate, (2,4-dimethylphenyl)methyl 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate, Caswell No. 359

Dimethrin (CAS 70-38-2) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C19H26O2 and a molecular weight of 286.40900 g/mol. Key properties include a boiling point of 363.9ºC at 760 mmHg, a density of 1.042g/cm3 and a flash point of 167.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 70-38-2
Jingsj CID: J-16885-8
Molecular Formula: C₁₉H₂₆O₂
Molecular Weight: 286.40900 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	363.9ºC at 760 mmHg
Density	1.042g/cm3
Flash Point	167.8ºC
Exact Mass	286.19300
PSA	26.30000
LogP	4.58500
Refractive Index	1.557

Activity & Biological Data

Additional Information	[1]. M S MASRI, et al. METABOLIC FATE OF TWO CHRYSANTHEMUMIC ACID ESTERS: BARTHRIN AND DIMETHRIN. Toxicol Appl Pharmacol. 1964 Nov:6:711-5.

Frequently Asked Questions

What is the CAS number of Dimethrin?

The CAS number of Dimethrin is 70-38-2.

What are the molecular formula and molecular weight of Dimethrin?

Dimethrin has molecular formula C19H26O2 and molecular weight 286.40900 g/mol.

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. "Dimethrin (CAS 70-38-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16885-8 (accessed 2026-11-06).

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