3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||288.78 g·mol−1|
|Appearance||Pale, yellow, translucent crystals|
|Melting point||63 to 68 °C (145 to 154 °F; 336 to 341 K)|
|Boiling point||202 to 208 °C (396 to 406 °F; 475 to 481 K) at 130 Pa|
|H302, H319, H361, H411|
|P273, P281, P305+P351+P338|
|NFPA 704 (fire diamond)|
|Flash point||> 100 °C (212 °F; 373 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
what is ?)(
Myclobutanil is a triazole chemical used as a fungicide. It is a steroid demethylation inhibitor, specifically inhibiting ergosterol biosynthesis. Ergosterol is a critical component of fungal cell membranes.
|Myclobutanil (2 stereoisomers)|
The Safety Data Sheet indicates the following hazards:
- Suspected of damaging fertility or the unborn child.
- Toxic to aquatic life with long lasting effects.
The first hazard has caused this chemical to be placed on the 1986 California Proposition 65 toxics list.
Banned for cannabis cultivation
Myclobutanil is banned in Canada, Colorado, Washington, Oregon, and Oklahoma for the production of medical and recreational marijuana. In 2014, a Canadian news investigation by The Globe and Mail reported the discovery of myclobutanil in medical marijuana produced by at least one government licensed grower. In September 2019, NBC News commissioned CannaSafe to test THC cartridges for heavy metals, pesticides, and residual solvents like Vitamin E; pesticides, including myclobutanil, was found in products from unlicensed dealers. In Michigan, the current state action limit for myclobutanil is 200 ppb in cannabis products.
- "Myclobutanil Product Sheet". Kingtai Chemicals Co.
- "SAFETY DATA SHEET Myclobutanil" (PDF). Cayman Chemical Company. Retrieved 11 August 2021.
- GOV, NOAA Office of Response and Restoration, US. "MYCLOBUTANIL - CAMEO Chemicals - NOAA". cameochemicals.noaa.gov.
- "Product Safety Assessment: Myclobutanil".
- "Canadians not told about banned pesticide found in medical pot supply" – via The Globe and Mail.
- "Tests show bootleg marijuana vapes tainted with hydrogen cyanide". NBC News.
- "Technical Bulletin".