Product Description
Thiabendazole (CAS No. 148-79-8) is a highly active broad-spectrum fungicide belonging to the benzimidazole class. It is widely used in agricultural applications due to its excellent antifungal properties and reliable disease-control performance.
Thiabendazole features systemic activity and can be absorbed and transported within plants, providing effective protection against a variety of fungal pathogens. It demonstrates strong inhibitory effects against multiple fungal groups, including Ascomycetes, Basidiomycetes, and Deuteromycetes, and offers long-lasting protective performance.
In addition to crop disease control, thiabendazole is commonly applied in the preservation and protection of harvested fruits and vegetables, helping maintain product quality and extend storage life. Its proven effectiveness and broad application range make it an important fungicidal material in modern agriculture.

Thiabendazole Chemical Properties
| Melting point | 298-301°C |
| Boiling point | 446.0±37.0 °C(Predicted) |
| density | 1.2271 (rough estimate) |
| vapor pressure | Negligible at room temperature |
| refractive index | 1.5500 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Soluble in methanol and dimethyl sulfoxide. |
| form | powder |
| pka | pKa 4.7 (Uncertain) |
| color | light yellow |
| Water Solubility | 0.005 g/100 mL |
| Merck | 149289 |
| BRN | 611403 |
| InChIKey | WJCNZQLZVWNLKY-UHFFFAOYSA-N |
| LogP | 2.47 |
| CAS DataBase Reference | 148-79-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Thiabendazole(148-79-8) |
| EPA Substance Registry System | Thiabendazole (148-79-8) |
| Hazard Codes | N,Xi |
| Risk Statements | 50/53-36/37/38 |
| Safety Statements | 60-61-36-26 |
| RIDADR | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | DE0700000 |
| TSCA | Yes |
| HazardClass | 9 |
| PackingGroup | III |
| HS Code | 29341000 |
| Hazardous Substances Data | 148-79-8(Hazardous Substances Data) |
| Toxicity | LD50 in mice, rats, rabbits (g/kg): 3.6, 3.1, >3.8 orally (Robinson) |
Product Application of Thiabendazole CAS No. 148-79-8
Thiabendazole is a highly effective broad-spectrum systemic fungicide widely used in agricultural disease management and post-harvest protection. When applied to plant roots, it can be absorbed and transported upward within plants, providing protection to the aerial parts while showing limited downward movement. It can also be applied through foliar spraying to help prevent and control fungal infections.
Thiabendazole demonstrates excellent activity against a variety of fungal diseases, including crop diseases caused by pathogenic fungi and root rot problems. It provides both preventive and curative effects, helping maintain plant health and improve crop quality.
In addition to field crop protection, thiabendazole is extensively used in the preservation of harvested fruits and vegetables. It is commonly applied for controlling storage-related fungal diseases in fruits such as citrus, apples, pears, and bananas, helping reduce post-harvest losses and extend storage life.
With its strong antifungal performance, long-lasting protection, and wide range of agricultural applications, thiabendazole remains an important fungicidal compound for modern crop protection and food preservation.

