The OECD Secretariat received almost simultaneously three proposals for an OECD Test Guideline on Direct Phototransformation in Water, i.e. aqueous photolysis. The purpose of this Guidance Document is to situate these proposals in a broad context consisting of the basic concepts of...

This paper reviews some general strategies used by OECD Member countries when assessing exposure in the context of risk assessments for existing industrial chemicals. It is intended as an initial overview, not as a comprehensive review. Strategies for source assessment, one of the elements of...

This paper presents internationally harmonised generic and technical terms used in chemical hazard/risk assessment which will help facilitate the mutual use and acceptance of the assessment of chemicals between countries, saving resources for both governments and industry.

This document contains the report of the OECD Workshop on Sharing Information about New Industrial Chemicals Assessment. Included in this report are the Workshop’s Conclusions and Recommendations, as well as a summary of discussions, case studies, and perspectives on the sharing of information...

This document provides a description of a Harmonised System for the Classification of Chemicals which are Hazardous for the Aquatic Environment and guidance to how the system will work as well as guidance to the interpretation of data for use in applying the classification criteria.

Several models, tools and methods have been published in the past 20 years to include bioavailability in risk assessment and several OECD member countries already have developed frameworks and published guidance documents for taking metal specificities into account in environmental risk...

This document is a tool to support regulatory authorities’ decisions on the hazard of specific chemicals when they receive test results from a Test Guideline (TG) or draft TG for the screening/testing of chemicals for endocrine disrupting properties. The contexts for these decisions will vary,...

This document provides guidance on how to use the OECD (Q)SAR Application Toolbox to build chemical categories according to the OECD Guidance on Grouping of Chemicals. It is part of an overall effort to provide guidance on the use of the (Q)SAR Application Toolbox.

This guidance document was originally published in 2012 and updated in 2018 to reflect new and updated OECD test guidelines, as well as reflect on scientific advances in the use of test methods and assessment of the endocrine activity of chemicals. The document is intended to provide guidance...