* First evaluation
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ISO common name: |
teflubenzuron | |
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Chemical name: |
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IUPAC: |
1-(3,5-dichloro-2,4-difluorophenyl)-3-(2,6-difluorobenzoyl)urea |
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CA: |
N-[[(3.5-dichloro-2,4-difluorophenyl)amino]carbonyl]-2,6-difluorobenzamide |
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CAS No: |
83121-18-0 |
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Synonyms: |
DART; DIARACT; NEMOLT; NOMOLT; CL 291,898; SAG 134 |
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Structural formula: |
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Empirical formula: |
C14H6Cl2F4N2O2 | |
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Molecular weight: |
381.1 | |
Physical and chemical properties
Technical material
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Purity: |
97 ± 0.72% (w/w) |
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State: |
crystalline solid |
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Colour: |
white to yellowish |
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Odour: |
practically odourless |
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Vapour pressure: |
8x 10-10 Pa (20°C) |
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3 x 10-10 Pa (40°C) (Celamerck, 1985a) |
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1.3 x 10-8 Pa (25°C) (Harteveld and Jager, 1988) |
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Melting Point: |
222.5°C (Pesticide Manual, 1994) |
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Octanol/water partition coefficient: |
log Pow = 4.56 (Darskus, 1982) |
Solubility (g/l at 20°C):
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hexane |
0.05 |
ethanol |
1.4 | |
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methanol |
0.6 |
dichloromethane |
1.8 | |
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n-octanol |
0.7 |
acetone |
10 | |
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2-propanol |
0.8 |
dioxane |
19 | |
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toluene |
0.9 |
cyclohexanone |
24 | |
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acetonitrile |
1.1 |
dimethylformamide |
170 | |
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water |
2 x 10-5 |
(Cardinaals, 1989; Pesticide Manual, 1994) | ||
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Hydrolytic stability: |
half-life at pH 5-7: 30 days (25°C),: 5 days (50°C) |
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half-life at pH 9: 10 days (25°C), 4 h (50°C) |
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Photolytic stability: |
in aqueous solution teflubenzuron shows a half-life of approximately 10 days |
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Storage stability: |
minimum 2 years under normal conditions (Pesticide Manual, 1994) |
Formulations
Teflubenzuron is available as suspension concentrates containing 150 g ai/l (NOMOLT, NEMOLT, and DART SC 15) or 50 g ai/l (NOMOLT and DART SC 5).
