Chemical name: 1,1-Ethanediol, 2,2,2-trichloro- Final regulatory action has been taken for the category: Pesticide Final regulatory action: The chemical is Banned Use or uses prohibited by the final regulatory action: All applications are prohibited. Pesticide use or uses that remain allowed: None The final regulatory action was based on a risk or hazard evaluation: Yes Summary of the final regulatory action: is prohibited to sell, stock, store or use chloral hydrate as a pesticide The reasons for the final regulatory action were relevant to: Human health Summary of known hazards and risks to human health: The Pesticide Authorisation Board (CTB) decided to withdraw all applications of chloral hydrate on the basis of the leaching potential to groundwater. In the Netherlands groundwater can be used for drinking water and therefore groundwater must remain free from pesticides (precaution principle). In the Netherlands, the limit value for the leaching to groundwater is 0.1 g/l, which was at that time based on the detection limit. In practice this leaching limit is used as a human health standard. Leaching of chloral hydrate from soil to groundwater is very likely to occur (20-50% of the dose) due to the mobility of chloral hydrate in soil, the moderate metabolism to trichloroacetic acid (TCA), the large exent of use, the recommended high dosage (50-75 kg a.s./ha) and the period of application (autumn). Expected effect of the final regulatory action in relation to human health: Prevention of contamination of drinking water derived from groundwater. The final regulatory action led to a complete risk reduction. Date of entry into force of the final regulatory action: 01/11/1988 |