GENERAL

ATSDR Hazardous Substance Release and Health Effects Database

ATSDR's ToxFAQs

Chemical Abstracts Service

Chemicals & Materials -  Canadian Centre for Occupational Health

Chemical Hazards and Chemical Safety Links 

Maintained by the Provisional Technical Secretariat of the Preparatory Commission for the Organization for the Prohibition of Chemical Weapons

Cornell University MSDS Archive

ECDIN - Environmental Chemicals Data and Information Network

Environmental Defense Funds' Chemical Scorecard

EPA Chemical Substances Database 

EPA OPPT Chemical Fact Sheets

EPA Toxic Substances Data Sheets from Open Data Solutions

EPA's list of chemicals monitored by major programs

Hazardous Chemical Database

Instant Chemical Hazards & Safety Data

MSDSs at Arkansas State University

National Toxicology Program index from the NIH

Pesticide Information Profiles

A multi-university project.

University of Utah Chemical Substances Database

LEAD

EPA's Technical Review Workgroup for Lead

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