2025 Annual Report
Annual Report
January 2026 news from the Sec Gen
News

January 2026 news from the Sec Gen

Dear colleagues and friends,As we begin a new year, I would like to thank you for your continued engagement and trust in ECETOC. 2026 promises to be an exciting and dynamic year, and I am pleased...
ECETOC launches Secondee Programme
News

ECETOC launches Secondee Programme

Looking for an extra challenge? A next step to help develop your career? Consider applying for our Secondee Programme!ECETOC is looking for early-career scientists currently working at a member co...
HSSD Tool

HSSD Tool

This software was developed by a consortium of partners to facilitate the uptake of novel approaches to estimate aquatic threshold concentrations (e.g. the concentration at which 5% of the species are exposed above their EC50, HC5).
The Human Exposure Assessment Tools Database (heatDB)

The Human Exposure Assessment Tools Database (heatDB)

heatdb is a public directory of exposure data sources as well as available tools for exposure
NanoApp

NanoApp

ECETOC’s NanoApp is a tool designed to define the boundaries of sets of similar nanoforms and to generate a justification for the REACH registration.
Targeted Risk Assessment (TRA)

Targeted Risk Assessment (TRA)

The Targeted Risk Assessment (TRA) estimates exposures to workers, consumers and the environment that arise during a series of events.
Chronic fish case studies towards an IATA

Chronic fish case studies towards an IATA

Why?Hazard and safety assessments for the pelagic compartment often rely on in vivo studies using a single fish species, raising ethical concerns and uncertainty in terms of extrapolation....
Estimating the environmental release of Synthetic Polymeric Microparticles from Products

Estimating the environmental release of Synthetic Polymeric Microparticles from Products

Why?REACH restriction: SPM use restricted; emissions reporting required by May 2027. Gap: No analytical methods available to measure SPM emissions. Solution: Draft SPERC-based approac...
Case Studies on Reliability and Relevance Considerations during Validation of NAMs

Case Studies on Reliability and Relevance Considerations during Validation of NAMs

Why?Validation of NAMs is often overlooked despite its importance for regulatory use. Traditional validation methods are less suitable for NAMs, which focus on key events rather than apical...
Task Force
11.06.2014

Activity-Based Relationships for Aquatic Ecotoxicology Data: Use of the Activity Approach to Strengthen MoA Predictions

Environmental Sciences Manager: Malyka Galay Burgos

Administrative Assistant Sonia Pulinckx

Background

Two ECETOC Task Forces on the risk assessment of PBTs have produced recommendations to enable the risk assessment of materials of high concern under REACH and other regulatory programs. In the first task force, one key approach for development of a more robust “PNEC' was identified as the application of critical body burden (CBB) in higher tier risk assessment and food chain assessment. The second task force was convened to provide a case study using the CBB approach. The final output for this group was a weight of evidence approach to identifying mode of action for organic chemicals, a critical piece necessary for the use of the CBB approach. In 2008, a PBT Workshop was held to identify priority programs for ECETOC to further advance PBT risk assessment methodology. This project is one of the proposed outputs of that workshop.

Objectives

The main objective of the task force is to report on the use of CBB in risk assessment and identify opportunities for its application for SVHCs. It is intended that this would result in recommendations for developing relevant data for ERA as well as further research needed in this area. Furthermore, either a peer-reviewed publication or an ECETOC report in addition to a targeted LRI project is anticipated.