Trinexapac-Ethyl 25%ME CAS No.95266–40–3 , Plant Growth Regulator
Common name: Trinexapac-ethyl
Chemical name: Ethyl 4-(cyclopropylhydroxymethylene)-3,
CAS No.: 95266-40-3
Molecular formula: C13H16O5
Molecular weight: 252.3
Physical & Chemical Properties
Molecular Weight: 252.26
Solubility: In water 10.2g/L (25°C)
Melting Point: 36°C
Flash Point: 87°C (189°F)
Acute Oral LD50 (Rat) : > 5,500 mg/kg
Acute Dermal LD50 (Rat) : > 2,020 mg/kg
Acute Inhalation LC50 (Rat) : > 2.75 mg/L (4 hrs.)
Eye Irritation: Moderately irritating
Dermal Irritation: Non-irritating
Dermal Sensitization: Not a skin sensitizer
Trinexapac-ethyl is a synthetic plant growth regulator that is
derived from cyclohexanecarboxylate.
Trinexapac-ethyl is used to control the growth on various grass
species and crops.
Trinexpac-ethyl is applied as a foliar spray, post-emergence, and
is translocated to the growing shoot
Trinexapac-ethyl as an inhibitor of the action of a key enzyme in
the formation of GA1, preventing the formation of the plant growth
regulator gibberllins, which promotes cell elongation.
In the absence of gibberellins the internodes of the plants fail to
grow and prevent the plant from growing taller. This can be used to
prevent lodging in crops and amenity turf, increase the yield in
crops by redirecting energy into the production of reproductive
parts and finally to reduce the frequency of mowing in turf.
Trinexapac-ethyl is approved for use on cereal crops such as
barley, durum wheat, oats, rye, triticale and wheat as well as
grassland, amenity turf and managed turf.
Trinexapac-ethyl is a soluble concentrate, as water dispersible
granules and as a micro-emulsion, in two main concentrations-120.9
g/l and 250 g/l.