Etridiazole
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| Names | |
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IUPAC name
5-ethoxy-3-(trichloromethyl)-1,2,4-thiadiazole
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| Identifiers | |
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3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.018.175 |
| EC Number | 219-991-8219-991-8 |
| KEGG | |
| MeSH | C014547 |
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PubChem CID
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| Properties | |
| C5H5Cl3N2OS | |
| Molar mass | 247.518 g mol−1 |
| Appearance | Pale yellow liquid with a mild, persistent odour |
| Density | 1.497 g cm−3 |
| Melting point | 22 °C (72 °F; 295 K) |
| Boiling point | 95 °C (203 °F; 368 K) at 1 mmHg |
| 0.117 g dm−3 | |
| log P | 3.37 |
| Vapor pressure | 0.011 mmHg/1.43 Pa at 25°C |
| Acidity (pKa) | 2.27 |
| Hazards | |
| Flash point | 154.5 °C (310.1 °F; 427.6 K) |
| Lethal dose or concentration (LD, LC): | |
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LD50 (median dose)
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1028 mg/kg (rat, oral) 2000 mg/kg (mouse, oral) 779 mg/kg (rabbit, oral) 1700 mg/kg (rabbit, dermal) |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Etridiazole is a fungicide and pesticide used for prevention of pythium ultimum on cotton plants.
Etridiazole can be synthesised from acetonitrile as follows:
It can also be is produced by the reaction of trichloroacetamidine hydrochloride with trichloromethanesulfenyl chloride, and then with sodium hydroxide in ethanol.
Etridiazole is stable under normal conditions, but degrades upon continuous exposure to sunlight, and is hydrolysed by alkalis. When heated to decomposition, it emits toxic fumes of hydrogen chloride, sulfur oxides, and nitrogen oxides.
Etridiazole has been classified as a Group B2 Probably Human Carcinogen.
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