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Chemical Identification
Common Name
Pinoxaden
中文通用名
唑啉草酯
IUPAC
8-(2,6-diethyl-p-tolyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropionate
CAS
8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropanoate
CAS No.
243973-20-8
Molecular Formula
C23H32N2O4
Molecular Structure
Category
Activity
Herbicide.Pinoxaden is effective on wild oat, green and yellow foxtail, barnyard grass, canary grass, Italian ryegrass and Persian darnel but does not control brome species, Poa spp or perennial grasses. The application window in wheat and barley will be from 2-leaf up to pre-boot and grass weeds from 1-leaf to 6-leaf + 3 tillers.

Pinoxaden is a systemic herbicide. Following uptake mainly through leaves (root absorption is very limited), it is rapidly translocated to growing points. Susceptible weeds stop growing within 48 hours. Symptoms of chlorosis are apparent after 7 to 21 days, and complete control is achieved in three to five weeks.

Axial (which includes cloquintocet-mexyl safener) can be used safely on all varieties of wheat and barley. The product is rainfast in 30 minutes.

Axial is used in conjunction with an adjuvant. Syngenta has developed A12127S which is used at 0.7 L/ha (9.6 oz/acre) in recommended spray water volumes of 50 – 100 L/ha (5 – 10 gall/acre). Axial can be applied aerially in water volumes of 30 – 50 L/ha (3 – 5 gall/acre).

Tank-mix partners to add broadleaved weed control include bromoxynil, dicamba, 2,4-D, MCPA, clopyralid, fluroxypyr, florasulam and sulfonylureas. Pinoxaden has a very short half-life in soil with no rotational restrictions.
Premix
Pinoxaden+clodinafop-propargyl
pinoxaden+clodinafop+2,4-D ester+fluroxypyr
Toxicology
(Rat): Oral LD50 >3,129 mg/kg; Dermal LD50 >2,000 mg/kg. Slightly toxic.
Environmental Profile
WATER SOLUBILITY: 220 mg/l @ 77°F

Birds (a.i.)

Negligible risk

Birds (100 EC)

LC50 >5,620 mg/kg

Earthworms (a.i.)

LC50 >1,000 mg/kg in dry soil??? No harm to soil dwellers

Earthworms (100 EC)

LC50???? 8.2 mg/kg in dry soil

Bees [contact] (a.i.)

LD50??>100 μg ai/bee????????? Safe to bees

Bees [contact] (100 EC)

LD50??????6 μg ai/bee

Bees [oral] (a.i.)

LD50??>200 μg ai/bee

Aquatic organisms

Negligible risk to algae, fish and invertebrates

Non-target flora and fauna

No risk to dicot plants and low risk to monocots; no adverse effects expected against beneficial arthropods

Soil and aquatic degradation

Degrades quickly in < 1 day. Main metabolites have half-lives of 1-16 days. Parent and metabolites are not considered persistent or to accumulate in soil

Transport Information
Hazard Class:O (Obsolete as pesticide, not classified)

Porduct NewsMore

Syngenta to launch AXIAL XTRA herbicide in Australia

Pinoxaden Cloquintocet-mexyl

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