Produit Nom:Paclobutrazol 15%WP

Common name paclobutrazol (BSI, draft E-ISO, (m) draft F-ISO, ANSI)

IUPAC name (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1, 2, 4-triazol-1-yl)pentan-3-ol???

CAS RN [76738-62-0]

PHYSICAL CHEMISTRY

Composition Tech. material is 90% pure.?

Mol. wt. 293.8?

M.f. C15H20ClN3O?

Form White, crystalline solid.?

M.p. 165-166 oC?

V.p. 0.001 mPa (20 oC)?

KOW?logP = 3.2?

Henry 1.13 ′ 10-5?Pa m3?mol-1?(calc.)?

S.g./density 1.22 g/ml?

Solubility In water 26 mg/l (20 oC). In acetone 110, cyclohexanone 180, dichloromethane 100, hexane 10, xylene 60, methanol 150, propylene glycol 50 (all in g/l, 20 oC).?

Stability Stable for more than 2 years at 20 oC, and more than 6 months at 50 oC. Stable to hydrolysis (pH 4-9), and not degraded by u.v. light (pH 7, 10 days).?

APPLICATIONS

Biochemistry Inhibits gibberellin and sterol biosynthesis, and hence the rate of cell division.?

Mode of action Plant growth regulator taken up into the xylem through the leaves, stems, or roots, and translocated to growing sub-apical meristems. Produces more compact plants and enhances flowering and fruiting.?

Uses Used on fruit trees to inhibit vegetative growth and to improve fruit set; on pot-grown ornamentals and flower crops (e.g. chrysanthemums, begonias, freesias, poinsettias and bulbs) to inhibit growth; on rice to increase tillering, reduce lodging, and increase yield; on turf to retard growth; and on grass seed crops to reduce height and prevent lodging. To be applied as a foliar spray, as a soil drench, or by trunk injection. Has some fungicidal activity against mildew and rusts.?