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Diss Factsheets

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Waiver: long-term toxicity testing on aquatic invertebrates is not required, since the chemical safety assessment does not indicate the need to investigate further the effects on aquatic organisms. 

Key value for chemical safety assessment

Additional information

According to Regulation (EC) No.1907/2006, Annex IX, Section 9.1.5, Column 2, long-term toxicity testing on aquatic invertebrates may need to be conducted if the results of the chemical safety assessment indicate the need to investigate further the effects on aquatic organisms. The chemical safety assessment for this substance demonstrates that 1) the exposure levels estimated in all relevant scenarios do not exceed the appropriate PNEC; and 2) the likelihood and severity of an event occurring due to the physicochemical properties of the substance is negligible, according to Annex 1, Section 6.4. Therefore, the criteria for adaptation are met. Specifically, all risk characterization ratios are under 1.0, based on PNECs derived from short-term toxicity studies on fish, aquatic invertebrates, and aquatic algae and plants, as demonstrated by the attached exposure assessments. Therefore, short-term toxicity data on fish, aquatic invertebrates and aquatic algae and plants are adequate to assess the environmental effects of pyridine, and long-term toxicity testing of aquatic invertebrates is not indicated.