Penconazole

Penconazole Basic information
Product Name:Penconazole
Synonyms:1-[2-(2,4-Dichlorophenyl)-n-pentyl]-1H-1,2,4-triazole;1-[2-(2,4-DICHLOROPHENYL)PENTYL]-1,2,4-TRIAZOLE;1-[2-(2,4-DICHLOROPHENYL)PENTYL]-1H-1,2,4-TRIAZOLE;PENCONAZOLE;4-triazole,1-(2-(2,4-dichlorophenyl)pentyl)-1h-2;cga71818;onmex;topasc
CAS:66246-88-6
MF:C13H15Cl2N3
MW:284.18
EINECS:266-275-6
Product Categories:Alpha sort;ConazolesPesticides&Metabolites;Fungicides;N-PAlphabetic;P;PA – PEN;Pesticides;FUNGICIDE
Mol File:66246-88-6.mol
Penconazole Structure
Penconazole Chemical Properties
Melting point 58.5 °C
Boiling point 436.06°C (rough estimate)
density 1.2556 (rough estimate)
vapor pressure 3.7 x l0-4 Pa (25 °C)
refractive index 1.6300 (estimate)
Fp 100 °C
storage temp. 0-6°C
solubility DMSO: 100 mg/mL (351.89 mM)
Water Solubility 73 mg l-1 (25 °C)
pka2.80±0.10(Predicted)
form neat
color White
BRN 541488
LogP3.660 (est)
CAS DataBase Reference66246-88-6(CAS DataBase Reference)
EPA Substance Registry SystemPenconazole (66246-88-6)
Safety Information
Safety Statements 22-24/25
RIDADR UN 3077 9 / PGIII
WGK Germany 2
RTECS XZ4615000
HS Code 29339900
ToxicityLD50 skn-rat: >3 g/kg DOVEAA 38,195,84
MSDS Information
ProviderLanguage
1-[2-(2,4-Dichlorophenyl)-n-pentyl]-1H-1,2,4-triazoleEnglish
Penconazole Usage And Synthesis
UsesPenconazole is used for the control of powdery mildew, pome fruit scab and other pathogenic Ascomycetes, Basidiomycetes and Deuteromycetes on vines, cucurbits, pome fruit, stone fruit, ornamentals, hops, tobacco and vegetables.
UsesPenconazole is an conazole based fungicide that works by inhibiting cell membrane ergosterol biosynthesis, thus stopping the development of fungi.
DefinitionChEBI: 1-[2-(2,4-dichlorophenyl)pentyl]1,2,4-triazole is a member of the classof triazoles that is 1,2,4-triazole substituted at position 1 by a 2-(2,4-dichlorophenyl)pentyl group. It is a dichlorobenzene and a member of triazoles.
Agricultural UsesFungicide: Penconazole is a systemic fungicide used to control powdery mildew. It is used on apples and grapes and other fruits, hops, tobacco, ornamentals and on vegetables. Not currently registered in the U.S. Reported to be used in most European countries. Currently, there are more than 30 global suppliers.
Trade nameAWARD®; CGA-71818®; ONMEX®; TOPAS®; TOPAS-C®; TOPAS-MZ®; TOPAZ®; TOPAZE®; TOPAZE-C®; TOPENCO 100EC®
Safety ProfileModerately toxic by ingestion and skin contact. When heated to decomposition it emits toxic vapors of NOx and Clí.
Metabolic pathwayPenconazole is metabolised in plants by hydroxylation of the propyl side chain and conjugation or metabolism to triazolylalanine and triazolylacetic acid. It is quite persistent in soils but degradation by sunlight requires only a few days. It is eliminated rapidly from mammals.
DegradationPenconazole (1) is stable to hydrolysis at pH 1-13 and at temperatures up to 350 °C. It is degraded in sunlight with a DT50 of 4 days in natural sunlight. Its photochemical reactions have been studied. On irradiation with light of wavelengths greater than 280 nm (high-pressure mercury lamp with filter), the major reaction was the formation of a cyclised product (2) (Scheme 1). Irradiation under the same conditions in isopropanol gave mainly 2 and 3 (a dechlorinated product). After 8 hours, yields were 29.8% of 2 and 12.3% of 3 respectively. The product 3 alone photodegraded only slowly but 2 was completely photolysed within 3 hours to further products, indicating its role as an intermediate in the photolytic pathways (Schwack and Hartmann, 1992, 1994). In the presence of isopropanol, photodehalogenation of 3 to 4 competed with substitution of a solvent molecule to give a low yield (
Penconazole Preparation Products And Raw materials

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