Search Example -- Toxicology

What are the TLV's for beryllium?

To open an STN Easy account , click the blue "Open New Account" button and complete the form. Within 30 minutes, your STN Easy login ID and password will be sent to the e-mail address you specify.

To get started, simply enter your login ID and password. Then click "Start Your Session." (1)

To learn more about STN Easy, you can also explore the "Quick Tips" or " Examples" under Help.

To find toxicological information, click "Advanced Search". (2) Then click the "Select Your Category" button. (3) Select the category "Toxicology" (4).

In the first drop-down box, select "Chemical Name." Then type in the name of the substance. (5)

Click "Browse Index" (6) to make sure the substance you are seeking is listed in the database before you pay for the search.

Select the chemical name you wish to search from the "Browse Index" list. Then click the "Search" button. (7)

Note the search cost.

We will select the RTECS record for beryllium. (8)

Note that with more complex chemical names, it is often better to start your search in the CAS Number Search, get the CAS Registry answer and then cross over to RTECS with the toxicology link at the end of the record. By starting with the CAS Registry record, all the listed synonyms for the chemical name are searched automatically in the toxicology category.

To display the detailed record, click on the title. (9)

Note the display cost is in brackets [ ].

The toxicological data for beryllium are displayed, including the Threshold Limit Values.

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