Esfenvalerate

Description

Esfenvalerate · CAS 66230-04-4 · C25H22ClNO3. UNII 7F07OXM0PP. Boiling Point: 151-167 °C; Melting Point: 59-60.2 °C; Melting Point: 59-60 °C.

Identification

CAS Registry Number	66230-04-4
PubChem CID	10342051
Molecular formula	C25H22ClNO3
IUPAC name	[(S)-cyano-(3-phenoxyphenyl)methyl] (2S)-2-(4-chlorophenyl)-3-methylbutanoate
UNII (FDA)	7F07OXM0PP

Computed Descriptors

Molecular Weight	419.9
XLogP3	6.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	8
Exact Mass	419.1288213
Monoisotopic Mass	419.1288213
Topological Polar Surface Area	59.3
Heavy Atom Count	30
Formal Charge	0

Physical & Chemical Properties

Boiling Point	151-167 °C
Melting Point	59-60.2 °C
Melting Point	59-60 °C
Flash Point	256 °C
Solubility	In water, 2.0X10-3 mg/L at 25 °C
Density	1.26 (4-26 °C)
Density	1.2 g/cm³
Vapor Pressure	1.5X10-9 mm Hg at 25 °C
LogP	log Kow = 6.22
LogP	6.2

Physical description & handling notes

• COLOURLESS-TO-WHITE CRYSTALS.
• White crystalline solid
• Colorless crystals
• Clear viscous liquid at 23 °C
• In xylene, acetone, chloroform, ethyl acetate, dimethylformamide, dimethyl sulfoxide >600, hexane 10-50, methanol 70-100 (all in g/kg, 25 °C)
• Solubility (1%): acetonitrile >60, chloroform >60, DMF >60, DMSO >60, ethyl acetate >60, acetone >60, ethyl cellosolve 40-50, n-hexane 1-5, kerosene <1, methanol 7-10, alpha-methylnaphthalene 50-60, xylene >60.

GHS Hazard Classification

Reported hazard statements	H301, H317, H331, H370, H373, H400, H410, H330

Documented Uses

• Esfenvalerate is a broad spectrum nonselective insecticide that is used to control a variety of insects in agriculture, commercial, residential, and industrial settings both indoors and outdoors.
• Pyrethroids are used as insecticides. (L857)
• Fenvalerate is used as an insecticide, mostly to control insects in food, feed, and cotton products, and for the control of flies and ticks in barns and stables. (L606)
• Information on 34 consumer products that contain Esfenvalerate in the following categories is provided:
• ... Esfenvalerate can be derived from (S)-2-(4-chlorophenyl)-isovaleroyl chloride and (S)-3-phenoxymandelic acid. It can be prepared most efficiently, however, from the (R,S) alcohol ester of the (S) acid through preferential precipitation ... .
• The concentrate may contain xylene ... or ethylbenzene ... .

Synonyms

ESFENVALERATE; 66230-04-4; Asana; Fenvalerate alpha; Halmark; Sumi-alfa; A alpha; Sumi-alpha; Asana XL; (S,S)-Fenvalerate; S-5620A alpha; 7F07OXM0PP; S-1844; (S)-cyano(3-phenoxyphenyl)methyl (2S)-2-(4-chlorophenyl)-3-methylbutanoate; OMS 3023; OMS-3023

Frequently Asked Questions

What are the CAS number and molecular formula of Esfenvalerate?

CAS 66230-04-4; molecular formula C25H22ClNO3; molecular weight — g/mol.

What other names is Esfenvalerate known by?

ESFENVALERATE, 66230-04-4, Asana, Fenvalerate alpha, Halmark, Sumi-alfa.

Is Esfenvalerate classified as hazardous?

Hazard statements reported: H301, H317, H331, H370, H373.

What are the key physical properties of Esfenvalerate?

Boiling Point: 151-167 °C; Melting Point: 59-60.2 °C; Melting Point: 59-60 °C; Flash Point: 256 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.