Model Number

66246-88-6

Procuct Name:Penconazole 5% WDG
CAS No.: 66246-88-6
Description:
Penconazole, Fungicide, FRAC 3; DMI: triazole

NOMENCLATURE
Common name: penconazole (BSI, draft E-ISO, (m) draft F-ISO)
IUPAC name: 1-(2,4-dichloro-b-propylphenethyl)-1H-1,2,4-triazole
Chemical Abstracts name: 1-[2-(2,4-dichlorophenyl)pentyl]-1H-1,2,4-triazole
CAS RN [66246-88-6]
EEC no. 266-275-6

PHYSICAL CHEMISTRY
Mol. wt. 284.2
M.f. C13H15Cl2N3
Form Fine white powder.
M.p. 57.6-60.3 ?
V.p. 0.17 mPa (20 ?); 0.37 mPa (25 ?)
KOW logP = 3.72 (pH 5.7, 25 ?).
Henry 6.6 ?10-4 Pa m3 mol-1 (20 ?, calc.).
S.g./density 1.30 (20 ?)
Solubility: In water 73 g/m3 (20 ?). In ethanol 730, acetone 770, toluene 610, n-hexane 22, n-octanol 400 (all in g/l, 25 ?).
Stability: Stable to hydrolysis (pH 1-13), and to temperatures up to 350 ?.
pKa 1.51, v. weak base

APPLICATIONS
Biochemistry: Sterol demethylation inhibitor; inhibits cell membrane ergosterol biosynthesis, stopping development of the fungi.
Mode of action:' Systemic fungicide with protective and curative action. Absorbed by the leaves, with translocation acropetally.
Uses: Control of powdery mildew, pome fruit scab and other pathogenic Ascomycetes, Basidiomycetes and Deuteromycetes on vines, pome fruit, stone fruit, ornamentals, hops and vegetables, at 25-75 g/ha.

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