Tebuconazole

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Tebuconazole is a triazole fungicide used agriculturally to treat plant pathogenic fungi. It is considered to be safe for humans by the U.S. Food and Drug Administration. Its acute toxicity is moderate. According to the World Health Organization toxicity classification, this product is listed as III, which means to be slightly hazardous.

Uses
1. As a seed dressing, tebuconazole is effective against various smut and bunt diseases of cereals such as Tilletia spp., Ustilago spp., and Urocystis spp. In addition, this product is resistant to seed-borne Septoria nodorum at 1-3g/dt seed. It is stable against Sphacelotheca reiliana in maize at 7.5g/dt seed.

2. As a spray, tebuconazole controls numerous pathogens in the following crops.

1) In Cereals
Rust species (Puccinia spp.) at 125-250 g/ha
Powdery mildew (Erysiphe graminis) at 200-250 g/ha
Scald (Rhynchosporium secalis) at 200-312 g/ha
Septoria spp. at 200-250 g/ha
Pyrenophora spp. at 200-312 g/ha
Cochliobolus sativus at 150-200 g/ha
Head scab (Fusarium spp.) at 188-250 g/ha

2) In Peanuts
Leaf spots (Mycosphaerella spp.) at 125-250 g/ha
Leaf rust (Puccinia arachidis) at 125 g/ha
Sclerotium rolfsii at 200-250 g/ha

3) In Bananas
Black leaf streak (Mycosphaerella fijiensis) at 100 g/ha

4) In Oilseed Rape
Stem rot (Sclerotinia sclerotiorum) at 250-375 g/ha
Alternaria spp. at 150-250 g/ha
Stem canker (Leptosphaeria maculans) at 250 g/ha
Pyrenopeziza brassicae at 125-250 g/ha

5) In Tea
Blister blight (Exobasidium vexans) at 25 g/ha

6) In Soya Beans
Phakopsora pachyrhizi at 100-150 g/ha

7) In Pome and Stone Fruit
Monilinia spp. at 12.5-18.8 g/100 l
Powdery mildew (Podosphaera leucotricha) at 10.0-12.5 g/100 l
Sphaerotheca pannosa at 12.5-18.8 g/100 l
Scab (Venturia spp.) at 7.5-10.0 g/100 l
White rot in apples (Botryosphaeria dothidea) at 25 g/100 l

8) In Grapevines
Powdery mildew (Uncinula necator) at 100 g/ha

9) In Coffee
Rust (Hemileia vastatrix) at 125-250 g/ha
Berry spot disease (Cercospora coffeicola) at 188-250 g/ha
American leaf disease (Mycena citricolor) at 125-188 g/ha

10) In Bulb Vegetables
White rot (Sclerotium cepivorum) at 250-375 g/ha
Purple blotch (Alternaria porri) at 125-250 g/ha

11) In Beans
Leaf spot (Phaeoisariopsis griseola) at 250 g/ha

12) In Tomatoes and Potatoes
Early blight (Alternaria solani) at 150-200 g/ha

Properties

CAS No.	107534-96-3
Molecular Formula	C₁₆H₂₂ClN₃O
Molar Mass	307.81838g/mol
Density	1.249g/cm³ at 20℃
Melting Point	102.4℃, 376K, 216°F
Solubility in Water	0.032g/L at 20℃
Solubility in Other Solvents	In dichloromethane >200, isopropanol, toluene 50-100, hexane <0.1 (all in g/l, 20ºC)
Stability	1. Tebuconazole is stable against elevated temperature. 2. The cereal fungicide also shows high stability to photolysis and hydrolysis in pure water or under sterile conditions. 3. Hydrolysis DT50 >1 year (pH 4-9, 22℃)