Imazethapyr postemergence Selective Herbicide 81335-77-5
Detailed Product Description
Imazethapyr postemergence Selective Herbicide 81335-77-5
- common name :imazethapyr
- chemical name : ( RS )-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid
- structure:
- molecular formula : C15H19N3O
- molecular weight : 289.3
- CAS NO.: 81335-77-5
- Physical and chemical Properties .
- Technical imazethapyr is a gray to yellowish crystal solid with a slightly pungent odor.
- The formulated product is a clear dark brown liquid with a musty odor.
- The formulated product is corrosive to zinc, mild steel, brass, copper, and aluminum .
Specification:
Items | Standard |
Appearance | Gray to yellowish crystal solid , no visible impurity |
Purity, %, w/w ≥ | 98.0 |
Insolubility in water w/w ≤ | 0.5-1.0 |
PH value range | 3.0-5.0 |
Loss on drying, w/w(%) ≤ | 1.0 |
Toxicity:
- Technical: The acute oral LD50 for technical imazethapyr was reported to be >5000 mg/kg for rats.
- The acute inhalation LC50 for rats exposed to imazethapyr is 3.27 mg/L.
- The dermal LD50 for rabbits exposed to technical imazethapyr was >2000 mg/kg.
- It was found to be slightly irritating to the rabbit eye, with complete recovery in 7 days. The technical material was found to be slightly irritating to the skin of male rabbits.
Application:
- Imazethapyr is an imidazole compound used as a selective herbicide.
- It is applied preplant incorporated, preemergence, at cracking and postemergence.
- The compound controls weeds by reducing the levels of three branched-chain aliphatic amino acids, isoleucine, leucine and valine, through the inhibition of aceto-hydroxyacid synthase, an enzyme common to the biosynthetic pathway for these amino acids.
- This inhibition causes a disruption in protein synthesis which, in turn, leads to an interference in dna synthesis and cell growth.
Formulation
- Imazethapyr: 98%TC
- Imazethapyr :5%SL, 10%SL, 70%SP, 70%WP, 70%WDG
Imazethapyr 98% TC |
A.I. content, % | ≥ 98.0 |
Loss on drying, % | ≤ 1.0 |
Acetone insoluble, % | < 0.5 |
Appearance | Off white to pale yellow crystalline powder |
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Imazethapyr 70 % WP |
A.I. Content, % | ≥ 70 |
pH value (1% water solution) | 6.0-8.0 |
Suspensibility, % | ≥ 85 |
Wetting time, s | ≤ 60 |
Fineness, % (through 45 μ m mesh) | ≥ 98 |
Water, %(w/w) | ≤ 1.0 |
Appearance | Off-white loose powder. |
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Imazethapyr 100 SL |
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A. I. Content (g/l) | ≥ 1 00 |
pH | 3.0-5.0 |
Water (%) | ≤ 0.5 |
Appearance | Light yellow transparent liquid |