Paclobutrazol(PP333)

[ Structure Formula ] :   
[Specification] :

Appearance: White crystals
Purity: 95%
Melting point: 164-168°C

[ Description ] :

Chemical name:

(+/-R*,R*)-B-[(4-chlorophenyl) methyl]-alpha-(1,1-dimethylethyl) -1H-1,2,4-triazole-1-ethanol

Toxicology:

WHO Table 5, EPA IV. Acute oral LD50 for male rats 2000mg/kg, female rats 1200mg/Kg. Acute dermal LD50 for rabbits and rats >1000mg/kg. Irritating to rabbit skin and eyes. Acute inhalation LC50 (4hr) for male rats 4.79mg/L, femal rats 3.13mg/L. cute oral LD50 for mallard >7900mg/Kg. LC50 for fish: rainbow trout 27.8mg/L, 96hr; carp 23.5mg/L, 48hr; water flea 33.2mg/L, 48hr. NOEL dose for bees >0.002mg.
Toxicology: PP333 can inhibit nutritive growth and promote fruit set. Usually used for ornamental plant to suppress upright growth. Also used for rice to increase tillering, lodying resistance and yield.
 
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