Chemistry

• United States Department of Energy
• National Science Foundation - Division of Chemistry
• Occupational Safety and Health Administration - US Department of Labor
• Agency for Toxic Substances and Disease Registry - US Department of Health and Human Services
• United States Food and Drug Administration

Any time you're in a laboratory setting, you should have access to Material Safety Data Sheets (MSDS or SDS) for any potentially hazardous substances used in that lab. 

• Chemical Safety’s SDS Search Tool

  The Chemical Safety Free SDS/ MSDS Database is a comprehensive resource for Safety Data Sheets (SDS) with over 1 million records. This database is constantly updated on a daily basis to ensure the accuracy and relevance of the information it contains. The database is accessible for free and is widely used by students, researchers, and professors as an essential tool to further their learning and research objectives.

• Material Safety Data Sheets

• ACS Center for Lab Safety

  Supports and promotes the safe, ethical, responsible, and sustainable practice of chemistry through easy access to authoritative tools, education, training, and guidance.

• Chemical Safety Library

  The Pistoia Alliance Chemical Safety Library (CSL) is an open-access platform that streamlines access to hazardous reaction information crowd-sourced from academic, industry and government institutions. Search for hazardous reaction information by CAS Registry Number, chemical name, etc.