A procurement manager in northern Jiangsu opens a quotation sheet for a 20-hectare vegetable programme and sees four lines: a pyrethroid blend, a neonicotinoid...
READ MOREChemical Name: 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-1-yl)-α-butanone
CAS number: 43121-43-3
Molecular weight: 293.75
Ingredient content: Triadimefon 95%; para-chlorophenol 0.5%; water 0.5%; others 4%.
Physical and chemical properties: The original drug is a white solid
Uses: Triadimefon is a colorless solid with a melting point of 82-83°C and a distinctive aromatic odor. Its vapor pressure is 0.02 mPa (20°C) and 0.06 mPa (25°C), density is 1.22 (20°C), KowlogP = 3.11, and solubility in water is 64 mg/L (20°C). It is moderately soluble in many organic solvents, except aliphatic hydrocarbons, with concentrations of >200 g/L in dichloromethane and toluene, 50-100 g/L in isopropyl alcohol, and 5-10 g/L in hexane (20°C). It is stable under acidic or alkaline conditions (pH 1-13). Its half-life exceeds one year at pH 3, 6, and 9 (22°C). Triadimefon is a highly effective, low-toxic, low-residue, long-lasting triazole fungicide with strong systemic properties. After being absorbed by various parts of plants, it can be transported throughout the plant body. It has preventive, eradicative, and therapeutic effects against rust and powdery mildew. It is effective against a variety of crop diseases such as corn round spot, wheat moire, wheat leaf blight, pineapple black rot, corn head smut, etc. It is relatively safe for fish and birds [1]. It is harmless to bees and natural enemies. The bactericidal mechanism of triadimefon is extremely complex. It mainly inhibits the biosynthesis of ergosterol in the bacteria, thereby inhibiting or interfering with the development of bacterial attachment spores and haustoria, the growth of hyphae and the formation of spores. Triadimefon is very active against certain pathogens in living organisms, but its effect in vitro is very poor. It is more active against hyphae than against spores. Triadimefon can be mixed with many fungicides, insecticides, herbicides, etc.
Structural formula:

| Physical and chemical properties | Density | 1.2±0.1 g/cm3 |
| Boiling point | 441.9±55.0 °C at 760 mmHg | |
| Melting point | 82°C | |
| Molecular formula | C14H16ClN3O2 | |
| Molecular weight | 293.749 | |
| Flash point | 221.0±31.5 °C | |
| Exact mass | 293.093109 | |
| PSA | 57.01 | |
| LogP | 2.77 | |
| Appearance | white powder | |
| Vapour pressure | 0.0±1.1 mmHg at 25°C | |
| Refractive index | 1.58 |
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