Common Name: Tebuconazole 

Molecular Formula: C₁₆H₂₂ClN₃O 

Molecular Weight: 307.82 

CAS No.: 107534-96-3 

Specification: Tebuconazole, 95% TC, 96% TC, 97% TC, 98% TC 

Form: Colorless crystals (tech., a colorless to light brown powder)

Melting Point: 105℃ 

Density: 1.25 (26℃) 

Solubility: In water 36 mg/L (pH 5-9, 20℃). In Dichloromethane >200, in Isopropanol, toluene 50-100, 

in Hexane<0.1 (all in g/L, 20℃). 

Stability: Stable to elevated temperatures, and to photolysis and hydrolysis in pure water, under 

sterile conditions, hydrolysis DT50 >1 y (pH 4-9, 22℃). 

Tebuconazole is an organic compound. It is a highly effective, broad-spectrum and systemic triazole 

fungicide. It has the three major functions of protection, treatment and eradication. It can kill the 

sickness and conduction on the surface of attached objects. It can also kill the germs that have 

invaded the crop body, and at the same time play a protective role, with a wide sterilization spectrum 

and a long lasting period. Like all triazole fungicides, Tebuconazole can inhibit fungal ergosterol 

biosynthesis. It is a high-efficiency fungicide used for seed treatment or foliar spraying of 

important economic crops. It can effectively prevent various rust, powdery mildew, net spot, root rot, 

scab, smut and seed transmission of cereal crops. Wheel spot disease and so on. When applied to the 

treatment of wheat seeds, it is equally effective for all kinds of pathogens carried by the seeds, 

whether adsorbed on the epidermis or inside the seeds, and is especially suitable for the prevention 

and treatment of smut.

- Biochemistry:

Steroid demethylation (ergosterol biosynthesis) inhibitor.

- Mode of Action:

Systemic fungicide with protective, curative, and eradicant action. Rapidly absorbed into the 

vegetative parts of the plant, with translocation principally acropetally.

- Uses:

As a seed dressing, Tebuconazole is effective against various smut and bunt diseases of cereals such 

as Tilletia spp., Ustilago spp., and Urocystis spp., also against Septoria nodorum (seed-borne), and 

Sphacelotheca reiliana in maize. As a spray, Tebuconazole controls numerous pathogens in various 

crops: rust species (Puccinia spp.), powdery mildew (Erysiphe graminis), Rhynchosporium secalis, 

Septoria spp., Pyrenophora spp., Cochliobolus sativus and Fusarium spp. in cereals; Mycosphaerella 

spp., Puccinia spp. and Sclerotium rolfsii in peanuts; Mycosphaerella spp. in bananas; Sclerotinia 

sclerotiorum and various pathogens of leaf and stem diseases in oilseed rape; Exobasidium vexans in 

tea; Phakopsora pachyrhizi in soya beans; Monilinia spp., rust species, powdery mildew and scab in 

pome and stone fruit; Botrytis spp., rust species, powdery mildew fungi, and (with dipping or 

spraying) Sclerotium cepivorum in grapes and some vegetable crops.

- Phytotoxicity:

Good plant compatibility in most crops with any formulation and achieved in more sensitive crops by 

appropriate formulations, e.g. WP, WG or SC.