Material Safety Data Sheets (MSDS)

Thousands of Material Safety Data Sheets (MSDSs) are now available electronically over the Internet. The primary MSDS databases below are for University of California faculty, staff and students only. Additional general and specific MSDS database sites are also listed. The web sites may be searched by chemical name, manufacturer name, or CAS. To learn how to understand an MSDS, read the EH&S MSDS Fact Sheet (download PDF). To report a problem with one of the links below, please contact This email address is being protected from spambots. You need JavaScript enabled to view it. .


MSDS — Material Safety Data Sheets

The MSDS database can be accessed using most common browsers, however, to access this UC MSDS database you must be connected through a recognized UC campus computer.

The University of California's Offices of Environment, Health & Safety have combined efforts and resources to create a source for Material Safety Data Sheets and chemical safety information.

TOMES — Chemical Hazard Information

A commercial database providing Toxicology, Occupational Medicine and Environmental Series Consolidated Point Solution information. The University of California, Environment, Health & Safety Offices offer this excellent resource to all UC campus sites with a UC internet provider address.


Chemical Information Sites

OSHA/EPA Occupational Chemical Database
This database compiles information from several government agencies and organizations.

Interactive Learning Paradigms Incorporated
This site has an extensive MSDS link library.

Pesticides MSDS Sites

EXTOXNET (Extension Toxicology Network)
The EXTOXNET InfoBase provides a variety of information about pesticides.

TOXNET (TOXicology Data NETwork)
TOXNET (TOXicology Data NETwork) is a computerized system of files oriented to toxicology related areas
from National Library of Medicine, at the National Institutes of Health.

Biological Hazards MSDS Sites

Infectious Substances MSDS
Public Health Agency of Canada

Other Chemical Hazards MSDS Sites

EPA Fact Sheets
Use to search the EMCI Chemical References web pages.

Agency for Toxic Substances and Disease Registry (ATSDR)
ATSDR ToxFAQs is a series of summaries about hazardous substances.

California Poison Information Center
The California Poison Control System.


Lead: Russ Blackmar
Phone: (510) 643-8187
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Team: Training, Emergency Response and Audit
Assistant Manager: Steve Maranzana


Do you work with chemicals or other hazardous materials? If so, the law requires you to have access to a material safety data sheet for each hazardous substance that is used. MSDSs provide good information on composition, toxicology, hazard identification, first aid measures, handling procedures, and personal protection. They will also give the manufacturers' address and phone number.

Keeping an up-to-date file of MSDSs is an important component of the Hazard Communication standard (Cal/OSHA Section 5194), also known as the "employee right-to-know law." Employees working with hazardous materials should know about the hazards of the products they use and how they can find the MSDSs on them quickly and easily.

Traditionally, it was necessary to keep large paper files of MSDSs on hand. Now it is possible to have computer access to large MSDS databases. There are a variety of MSDS databases available over the Internet. Most of the MSDSs in these computerized databases are for single chemical reagents; commercial products with combinations of chemicals are not typically found in the databases. If you cannot access an MSDS in any of the databases, then you will need to request a copy from the manufacturer, and keep it on file.

EH&S maintains a repository of paper MSDSs and also has access to other large MSDS databases. If you have difficulty getting an MSDS for a hazardous material, contact EH&S.