Chlorothalonil

  • 2,4,5,6 -tetrachloro - benzene 1,3 - dicarbonitrile
  • Chlorothalonil
  • Tetrachloroisophthalonitrile

Colorless crystalline solid

Fixed

250-251 ° C

350 ° C.

1.2 Pa ( 40 ° C)

Very poor in water ( 0.6 mg · l-1 at 20 ° C)

Risk

Repealed as carcinogenic

3700 mg · kg -1 ( LD50, mouse, oral)

Template: Infobox chemical / molecular formula search available

Chlorothalonil is a fungicide, which was introduced in 1966 from Diamond Alkali Co.. As an antifungal agent is the original area of ​​application of plant protection, but it is detectable and thus can also be found indoors in with wood preservative - loaded materials.

Effect

Chlorothalonil is a non- systemic foliar fungicide with protective action. It reacts with thiol compounds, especially glutathione, the germinating fungal cells. This leads to the disruption of glycolysis and thus the death of the fungal cells.

Use

Chlorothalonil is used for the control of many fungal diseases in a variety of cultures. Due to its low solubility in water and its UV stability, it is also suitable as a paint fungicide. The spectrum of chlorothalonil detected fungi, yeasts and algae, has, however, so far as the mushrooms, some gaps (eg Trichoderma viride and Rhizopus stolonifer ).

Toxicity

Chlorothalonil (substances with reasonable suspicion of carcinogenic potential) as well as allergisierender material ( skin sensitization ) that are listed in the MAK list IIIB.

CAS registry number Vapor pressure Dangerous Substances Directive (67/548/EEC)
184495
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