Return to the list
European Union - Final Regulatory Action
Tricyclazole CAS number:
41814-78-2
Date circular:
12/06/2020

Chemical name: 1,2,4-Triazolo[3,4-b]benzothiazole, 5-methyl-

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:

The final regulatory action was based on a risk or hazard evaluation: Yes

Summary of the final regulatory action:

It is prohibited to place on the market or use plant protection products containing tricyclazole in the European Union. Tricyclazole has not been approved as active substance for use in plant protection products under Regulation (EC) No 1107/2009 concerning the placing of plant protection products on the market. As a consequence, tricyclazole is not approved for placing on the market and use pursuant to Regulation (EC) No 1107/2009. Sale and distribution of plant protection products containing tricyclazole and disposal, storage, placing on the market and use of existing stocks of plant protection products containing tricyclazole is prohibited as of 3 November 2016.

The reasons for the final regulatory action were relevant to: Human health and environment

Summary of known hazards and risks to human health: It was concluded that no plant protection product containing the active substance tricyclazole is expected to satisfy in general the requirements laid down in Article 29(1) of Regulation (EC) No 1107/2009 and the uniform principles laid down in Regulation (EC) 546/2011.

According to the evaluation related to human health the following concerns were identified:

The assessment of the genotoxic and carcinogenic potential of the substance was inconclusive and therefore reference values (ADI, ARfD and AOEL) for use in human health risk assessments could not be established. Consequently, the risk assessments for operators, workers, bystanders, residents and consumers could not be conducted.

The test material used in the toxicity studies was not representative of the proposed technical specification for the active substance and associated impurities.

Certain areas of the assessment could not be finalised, including the potential of tricyclazole to act as an endocrine disruptor.

Expected effect of the final regulatory action in relation to human health:

Reduction of any risk for human health from the use of plant protection products containing tricyclazole.

Summary of known hazards and risks to the environment: It was concluded that no plant protection product containing the active substance tricyclazole Is expected to satisfy in general the requirements laid down in Article 29(1) of Regulation (EC) No 1107/2009 and the uniform principles laid down in Regulation (EC) 546/2011.

According to the evaluation related to environment the following concerns were identified:

Certain areas of the assessment could not be finalised, including the potential for groundwater contamination by metabolites whose toxicological relevance is unknown.

Expected effect of the final regulatory action in relation to the environment:

Reduction of any risk for the environment from the use of plant protection products containing tricyclazole.

Date of entry into force of the final regulatory action: 03/11/2016