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Chemical Identification
Common Name
Tebuconazole
中文通用名
戊唑醇
IUPAC
(RS)-1-p-chlorophenyl-4,4-dimethyl-3-(1H-1,2,4-triazol-1-ylmethyl)pentan-3-ol
CAS
α-[2-(4-chlorophenyl)ethyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol
CAS No.
107534-96-3
Molecular Formula
C16H22ClN3O
Molecular Structure
Category
Activity
Fungicide
Tebuconazole is a systemic fungicide with protective and curative action. It is rapidly absorbed into the vegetative parts of the plant with translocation occurring acropetally.
CropUse
Tebuconazole is a fungicide for the control of smuts, bunt, seed rots and seedling blights on barley, oats and wheat as a seed treatment and for the control of Fusarium Head Blight on wheat as a post-emergent treatment.

Crop Uses:
Cereals (target diseases: Rust species) 125250 g ai/ha
Cereals (target diseases: powdery mildew) 200250 g ai/ha
Cereals (target diseases: head scab) 188250 g ai/ha
Peanuts (target diseases: leaf spots) 125250 g ai/ha
Tea (target diseases: blister blight) 25 g ai/ha
Bananas (target diseases: black leaf streak) 100 g ai/ha
Premix
Clothianidin+metalaxyl+prothioconazole+tebuconazole
Imidacloprid+imazalil+metalaxyl+tebuconazole
Imidacloprid+metalaxyl+tebuconazole
Imidacloprid+thiram+tebuconazole
Imidacloprid+tebuconazole
Trifloxystrobin+tebuconazole
Tebuconazole+fluoxastrobin
Chlorothalonil+tebuconazole
Fenaminstrobin+tebuconazole
Fluoxastrobin+prothioconazole+tebuconazole
Permethrin+dichlofluanid+tebuconazole
Permethrin+tebuconazole
Captan+tebuconazole
Azoxystrobin+Tebuconazole
Tebuconazole+carbendazim
Tebuconazole+Prochloraz
tebuconazole+prothioconazole+metalaxyl+imidacloprid
Azoxystrobin+Metalaxyl+Tebuconazole
Fluopyram+Tebuconazole
Pyraclostrobin+Tebuconazole
Tebuconazole+Prothioconazole+Metalaxyl
Thiophanate-methyl+Tebuconazole
Tebuconazole+Kresoxim-methyl
Spiroxamine+Tebuconazole
Ningnanmycin+Tebuconazole
Ningnanmycin+Tebuconazole
Phenamacril+Tebuconazole
Tebuconazole+Zinc thiazole
CYPERMETHRIN+TEBUCONAZOLE
TEBUCONAZOLE+TRIFLUMURON
PROPICONAZOLE+TEBUCONAZOLE
PERMETHRIN+PROPICONAZOLE+TEBUCONAZOLE
PROTHIOCONAZOLE+TEBUCONAZOLE
Tebuconazole+Thiamethoxam
Dithianon+Tebuconazole
Tebuconazole+Dimetachlone
Coumoxystrobin+Tebuconazole
Bromothalonil+Tebuconazole
Tricyclazole+Tebuconazole
Sulfur+Tebuconazole
Cyprodinil+Tebuconazole
Carboxin+Tebuconazole
Fluazinam+Tebuconazole+Cartap
Metalaxyl-M+Tebuconazole+Azoxystrobin
Cyflufenamid+Tebuconazole
Emulsifiable concentrate, flowable, seed dressing, oil-water emulsion, water dispersible granule, wettable powder, emulsion for seed treatment.

Premix Parters: atrazine terbuthylazine; terbuthylazine; terbuthylazine terbutryn; alachlor; amitrole glyphosate; atrazine; atrazine terbumeton; bromoxynil; glyphosate; isoxaben; S-metolachlor; tembotrione; terbumeton; terbumeton terbutryn; terbutryn.
Physical Properties
Molecular weight:307.8 g/mol; Physical form:Colourless crystals; ( tech., colourless to light brown powder). Density:1.25 (26 °C); Composition:Racemate. Melting point:105 °C; Vapour pressure:1.7 × 10-3 mPa (20 °C) ( OECD 104); Henry constant:1 × 10-5 Pa m3 mol-1 (20 °C); Partition coefficient(n-octanol and water):logP = 3.7 (20 °C); Solubility:In water 36 mg/l ( pH 5-9, 20 °C). In dichloromethane >200, isopropanol, toluene 50-100, hexane <0.1 (all in g/l, 20 °C).; Stability:Stable to elevated temperatures, and to photolysis and hydrolysis in pure water, under sterile conditions; hydrolysis DT50 >1 y ( pH 4-9, 22 °C).
Toxicology
Oral:Acute oral LD50 for male rats 4000, female rats 1700, mice c. 3000 mg/kg.

Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg.

Non-irritating to skin; mild irritant to eyes (rabbits).

Inhalation: LC50 (4 h) for rats 0.37 mg/l air (aerosol), >5.1mg/l (dust).
Environmental Profile
Ecotoxicology:

Algae: ErC50 (96 h) for Scenedesmus subspicatus 4.01mg/l (static).Bees: LD50 (48 h) (oral) 175.8 μg/bee; (contact) 0.6 μg/bee.Birds:Acute oral LD50 for male Japanese quail 4438, female Japanese quail 2912, bobwhite quail 1988 mg/kg b.w. Dietary LC50 (5 d) for mallard ducks >4816, Daphnia: LC50 (48 h) 4.2 mg/l (flow through).Fish: LC50 (96 h) for rainbow trout 4.4, bluegill sunfish 5.7 mg/l (flow through).Worms:Acute LC50 (14 d) for Eisenia foetida 1381 mg/kg dry soil.Other aquatic spp.:No effect on Chironomus riparius at 0.1 mg/l (28 d).Other beneficial spp.:No adverse effects on ground dwellers, e.g. ground beetles (Poecilus cupreus) (adults and larvae) or on foliage dwellers, e.g. ladybirds (Coccinella septempunctata), up to 375 g/ha (EW 250 formulation).


Environmental fate:

Animals:After three days, elimination was almost complete (>99%). Tebuconazole was excreted with the urine and the faeces.Soil:The degradation of tebuconazole in soil was slow in laboratory studies. Under field conditions, the compound degraded much more rapidly, and did not accumulate in long-term studies (3-5 y). Since no residues could be detected in deeper soil layers of thesPlant:Metabolism studies on wheat, grapes and peanuts show that tebuconazole is the major terminal residue. The metabolites detected were mainly triazole-containing compounds of no toxicological relevance.

Acute oral LD50 (Japanese quail)

4438 (male)

Acute oral LD50 (Japanese quail)

2912 (female)

Acute oral LD50(bobwhite quail)

1988 mg/kg b.w

LC50 (rainbow trout)

4.4 (96 h)

LC50 (bluegill sunfish)

5.7 mg/l

LC50(Daphnia)

4.2 mg/l (48 h)

LD50 (Bees)

175.8 μg/bee

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

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