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Common Name Paclobutrazol CAS NO. 76738-62-0
Chemical Formula


Molecular Mass 293.8
Structural Formula
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.
Pacloburazol 95%TC
Paclobutrazol tc
 Appearance   Off-white to light yellow solid
 Content of a.i.   ≥95%
 Loss on drying   ≤0.5%
 pH   4~9
Acetone insolubles  ≤0.5%
Paclobutrazol 40%SC
Paclobutrazol SC
  Appearance  White, flowable  liquid
  Content of a.i.  ≥40%
  Suspensibility  ≥90%
  Wet sieve(75µm sieve)   ≥98%
  pH  6~9
Paclobutrazol 35%SC
Paclobutrazol 35%SC
  Appearance  White flowable liquid
  Content of a.i.  ≥35%
  Suspensibility  ≥90%
  Wet sieve(75µm sieve)   ≥98%
  pH  6~9
Note:Other formulations are available on request.
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