* First evaluation
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ISO common name |
tebufenozide |
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Chemical name | |
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IUPAC: |
N-tert-butyl-N'-(4-ethylbenzoyl)-3,5-dimethylbenzohydrazide |
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CA: |
3,5-dimethylbenzoic acid 1 -(1,1-dimethylethyl)-2-(4-ethylbenzoyl)hydrazide |
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CAS No: |
112410-23-8 |
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Synonyms: |
RH-75992, HOE-105540, MIMIC |
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Structural formula: |
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Molecular formula: |
C22H28N2O2 |
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Molecular weight: |
352 |
Physical and chemical properties
Pure active ingredient (Kelly. 1992b)
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Vapour pressure: |
2 x 10-8 torr (3 x 10-6 Pa) |
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Melting point: |
191-191.5°C |
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Octanol/water partition coefficient: |
mean KOW 17.906. |
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log KOW 4.25 |
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Solubility: |
0.83 mg/l in water |
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6.5 g/100 ml in acetone |
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10.8 g/100 ml in methanol |
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24 g/100 ml in methylene chloride |
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bulk density: |
0.28 g/ml |
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Hydrolysis: |
stable at pH 5, 7, or 9. |
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Photolysis: |
degraded photolytically in pond water with a half-life of 67 days (Reynolds, 1992b). Degraded photolytically when adsorbed on soil with a half-life of 98 days (Reynolds, 1991). |
Technical material (Kelly, 1992a)
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Purity: |
94-97% (average 96%) |
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Melting point: |
188.5-190.0°C |
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Stability: |
stable at ambient temperatures for at least two years |
Formulations
The main formulations are two aqueous suspension concentrates and a wettable powder. The suspension concentrates are the 2 SC containing 240 g ai/l and the 200 SC containing 200 g ai/l. The wettable powder contains 700 g ai/kg. Several other formulations have been developed for use specifically in rice: a 7.5 g ai/kg wettable powder, an 8 g ai/kg wettable powder, a 100 g ai/kg wettable powder, and a 1 g ai/kg granule.
