Description

trans-Permethrin is a specific stereoisomer of the widely used synthetic pyrethroid insecticide, Permethrin. This compound is valued for its targeted insecticidal activity and is a critical intermediate in the synthesis of high-purity agrochemical formulations. It is essential for manufacturers and formulators in the agricultural and public health sectors who require precise, high-quality active ingredients for producing effective pest control solutions.

Application

• As a key active ingredient intermediate in the synthesis of advanced agricultural insecticides.
• Formulation of professional-grade public health insecticides for mosquito and vector control programs.
• Manufacturing of veterinary and livestock ectoparasiticides.
• Production of household and garden insecticide products.
• Used in research and development for creating new pyrethroid-based formulations with enhanced properties.
• Potential use in material preservation, such as in insect-repellent textiles.

Basic Information

Product Name	trans-Permethrin
CAS No.	551877-74-8
Molecular Formula	C21H20Cl2O3
Molecular Weight	391.29 g/mol
Synonyms	(1R,3R)-3-(2,2-Dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylic acid (3-phenoxyphenyl)methyl ester; (1R-trans)-3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid (3-phenoxyphenyl)methyl ester; trans-(1R,3R)-Permethrin; (1R,3R)-Permethrin; trans-Permethrin isomer; (+)-trans-Permethrin; NRDC 163 trans-isomer; FMC 33297 trans-isomer
EINECS	Contact for details

Quality Control

Our trans-Permethrin CAS NO 551877-74-8 is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for isomer purity and assay, to ensure it meets precise specifications for use in high-grade formulations. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; prolonged exposure to air and light should be avoided to maintain stability and efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Isomeric Purity (trans-isomer)	≥ 95.0%
Related Substances (HPLC)	≤ 2.0% total
Loss on Drying	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.