About WLT

More updates coming soon


The World Library of Toxicology, Chemical Safety, and Environmental Health is a free global Web portal that provides the scientific community and public with links to major government agencies, non-governmental organizations, universities, professional societies, and other groups addressing issues related to toxicology, public health, and environmental health. It seeks to overcome barriers to the sharing of information between countries by creating a partnership of national and international organizations contributing high-quality scientific information resources in toxicology and environmental health to a borderless data depository. The overall goal is to improve global public health.

The World Library is compiled by an international group of scientists (Country Correspondents) who are responsible for the selection and maintenance of reliable, quality resources for their respective countries. A Review Panel of toxicologists and other professionals oversees the site's completeness, quality, reliability, and ease of use.


The World Library of Toxicology, Chemical Safety, and Environmental Health was originally developed by Division of Specialized Information Services (SIS) of the National Library of Medicine (NLM), a component of the National Institutes of Health (NIH), within the U.S. Department of Health and Human Services. It is currently being developed and maintained as a partnership between Toxipedia, the International Union of Toxicology (IUTOX), and NLM. The WLT was publicly launched on September 7, 2009 at the Seventh Congress of Toxicology in Developing Countries (CTDC-VII) in Sun City, South Africa.



The executive director and managing editor is Steven G. Gilbert, a toxicologist and author of A Small Dose of Toxicology. More information on this book is available on A Small Dose of ..., his website.

Editor, Project Manager, Spanish Project coordinator, and Social Media Guru Juliana P. DeCarvalho is a committed activist who has been working on projects to preserve Brazils and USAs environment and wildlife and projects that connects Science and People using her Science and languages background. She attended University of Washington department of Biology and took on World Library of Toxicology in 2013  to fully manage and relaunch the website: www.wltox.org


Philip Wexler - Coming soon…

User Privacy Policy

The World Library of Toxicology is available freely to the general public. Users can voluntarily choose to create a username and password to sign in to the WLT and Toxipedia suite of sites, which gives them greater interaction with other users and the sites. Similarly, public users can voluntarily choose to sign up for the WLT newsletter. Any contact information submitted by users will remain strictly confidential and will never be passed on to any third party.




WLT is a modified wiki website that provides the ability to edit a page to all users who are granted permission. Those privileges are managed by the site administrators. A vast majority of the pages do not have restrictions and are subject to editing by any registered user. WLT administrators, however, have the right to reject any edits if they are deemed inaccurate or overly biased. 


Any of the trademarks, service marks, collective marks, design rights, or similar rights that are mentioned, used, or cited in the articles of the WLT encyclopedia are the property of their respective owners. Their use here does not imply that you may use them for any purpose other than for the same or a similar informational use as contemplated by the original authors of these WLT articles under the GFDL licensing scheme. WLT cannot grant any rights to use any otherwise protected materials. Your use of any such or similar incorporeal property is at your own risk.

Jurisdiction and legality of content

Publication of information found in WLT may be in violation of the laws of the country or jurisdiction from where you are viewing this information. The WLT database is stored on a server in Washington State and is maintained in reference to the protections afforded under local and federal law. Laws in your country or jurisdiction may not protect or allow the same kinds of speech or distribution. WLT does not encourage the violation of any laws, and cannot be responsible for any violations of such laws, should you link to this domain or use, reproduce, or republish the information contained herein.


The WLT does not host any form of advertisement. Organizations featured in our "Featured Site" box on the home page have been selected by the staff of WLT. WLT is not affiliated with these organizations, nor does it receive funding to feature these sites on the WLT.

Not professional advice

If you need specific advice (for example, medical, legal, financial, or risk management) please seek a professional who is licensed or knowledgeable in that area. 

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