Imazamox

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Imazamox

中文通用名

甲氧咪草煙

IUPAC

2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-(methoxymethyl)nicotinic acid

CAS

(±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-(methoxymethyl)-3-pyridinecarboxylic acid

CAS No.

114311-32-9

Molecular Formula

C₁₅H₁₉N₃O₄

Molecular Structure

General Product Information

Category

Herbicides > Imidazolinone herbicides

Activity

Herbicide
Imazamox is readily absorbed by foliage and translocated throughout the plant. It is primarily an early post-emergence treatment, the optimum timing for applications being to weeds with 1-4 leaves. The product also has some residual activity. The active ingredient is sometimes formulated as the ammonium salt. Weeds die within 6 weeks of treatment. The use of crop-oil concentrates or surfactants is recommended as adjuvants for post-emergence applications.

CropUse

CropUses:
legumes, soybeans, peanuts, groundnuts, alfalfa, canola, lucerne, maize, wheat, canola, sunflowers, lentils

20-75 g ai/ha

Premix

imazamox+imazethapyr+sethoxydim
imazamox+imazethapyr
Imazamox+Bentazone

Water-dispersible granule (WG) ;Soluble concentrate (SL) ;Emulsifiable concentrate.
Premix Parters: diuron; glyphosate; imazapic; imazethapyr;

Physical & Safety Data

Physical Properties

Molecular weight:305.3; Physical form:Odourless, off-white solid. Composition:Tech. is 93% pure. Melting point:166.0-166.7 °C ( tech.); Vapour pressure:<1.3 × 10-2 mPa; Partition coefficient(n-octanol and water):logP = -1.03 ( pH 5, uncorrected for dissociation), -2.4 ( pH 7, uncorrected), and 0.73 ( pH 5 & 6, corrected); Solubility:In water 4160 ppm (20 °C). In acetone 2.93 g/100 ml.; Stability:Stable to hydrolysis at pH 5, 7, and 9. DT50 for aqueous photodegradation 6.8 h.

Toxicology

Oral:Acute oral LD₅₀ for male and female rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD₅₀ for male and female rats >4000 mg/kg. Slight skin irritant; moderate eye irritant (rabbits). Not a skin sensitiser (guinea pigs). Inhalation: LC₅₀ (4 h) for rats >6.3 mg/l.

Environmental Profile

Ecotoxicology:
Bees: LD₅₀ (contact) >25 μg/bee.Birds:Acute oral LD₅₀ (14 d) for bobwhite quail >1846 mg/ kg.Daphnia: NOEC 122 mg/l.Fish: LC₅₀ (96 h) for rainbow trout 122 mg/l.

Environmental fate:
Animals:In rats, following oral administration, rapidly excreted in urine and faeces, mainly as unchanged parent.Soil:Degraded microbially; metabolites show moderate to strong binding potential; unlikely to leach.

Transport Information

Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)