TOXNET is a free, web-based system of toxicology and environmental health databases covering 1965 to present. It contains over 20 databases on toxic chemicals, hazardous substances, and occupational health. Users can search individual databases or all databases at once, using Boolean operators and other search techniques. Search results show which databases have relevant information.

1. • Free, Web-based system of databases on toxicology,
environmental health, hazardous chemicals, toxic
releases, chemical nomenclatures, and specialty
areas such as occupational health and consumer
products.
• Not formatted for web-devices, not designed for first
responders/those on the scene.
• TOXLINE and DART citations cover 1965 to the
present. You may also find a few citations dating
back to the 1940's.
http://toxnet.nlm.nih.gov/
TOXNET: Introduction

2. • http://sis.nlm.nih.gov/enviro/databasedescriptions.html
• Toxnet is a collection of 20 different databases. Click the link
above for a description of each database.
TOXNET: The Databases

3. From the main TOXNET page, you can also learn more about the
databases by clicking on the question marks next to each database
name.
Clicking on a question mark takes
you to a short description,
example below.
TOXNET: The Databases (cont.d)

4. There are two ways to search Toxnet—You can either search a
specific database or enter a term in the main search box which will
search all of them.
Once you hit
search, the
results will tell
you which
databases the
information is
coming from.
TOXNET: Search Techniques

5. TOXNET:
• Uses Boolean operators (and, or, not)
• Truncation
• Phrase searching—Put quotation marks around your terms to
search as a phrase
• Synonym—By default the system will search for the exact
name, synonyms, and CAS number. Select “no” to search only
exact term or CAS number.
• To do an “advanced”
search, click the “limits”
box underneath the search
window. This will expand
and give options for how to
limit the search.
TOXNET: Search Techniques

6. Once you click on a database on the results page, you will
encounter a list of the articles with this set of buttons on the left-
hand side:
Save Checked Items—save items in a set for
displaying, sorting, and downloading
Sort—sort the entire search results or items in a saved set
Download—download the entire search results or items saved
in a set in brief, full, abstract, or tagged form.
Modify Search—make changes to the most recent search
Basic Search—conduct a new search in the same database
Browse Index—browse all words, CAS Registry
Number, chemical name, and in bibliographic databases MeSH
headings/keywords and authors
Go to the Help file for that database
Go to TOXNET Home
TOXNET: Managing Results
http://sis.nlm.nih.gov/enviro/toxnetmanualfeb2011.
pdf