Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.

Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.

Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.

The purpose of Toxicological Profiles Addenda is to provide, to the public and other federal, state, and local agencies a non-peer reviewed supplement of the scientific data that were published in the open peer-reviewed literature since the release of the profile.

The MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse, non-cancer health effects over a specified duration of exposure. The information in this MRL serves as a screening tool to help public health professionals decide where to look more closely to evaluate possible risk of adverse health effects from human exposure.