The following is a list of numerous resources including, organizations, associations, trade publications and directories. We believe these sites to be helpful and informative. If you know of a useful site and would like to list it here, please contact us.
National Fire Protection Association
MSDS Collections
Research chemical properties, including flammability data:
http://msdssearch.com/DBlinksN.htm
NIOSH (National Institute for Occupational Safety & Health)
http://www.cdc.gov/niosh/homepage.html
Listing for IDLH chemical concentrations that are an "Immediate Danger to Life or Health": http://www.cdc.gov/niosh/idlh/intridl4.html
U.S. Chemical Safety & Hazard Investigation Board CSB
EPA (Integrated Risk Information System) IRIS Database of human health effects from chemical exposure
Physikalisch- Technischen Bundesanstalt
http://www.ptb.de/de/index.html
FM Global (Factory Mutual)
ISA (The Instrumentation, Systems, & Automation Society)
IEC (International Electrotechnical Commission)
NIST (National Institute of Standards & Technology)
CAS (Chemical Abstracts Service)
CENELEC (European Committee for Electrotechnical Standardization)
Industrial Heating Equipment Association
Environmental Protection Agency
Canadian Center for Health and Safety
With FAQ concerning combustible gas and vapors
http://www.ccohs.ca/oshanswers/chemicals/flammable/flam.html
OSHA (Occupational Safety & Health Administration)
CFR (Code of Federal Regulations)
https://www.gpo.gov/fdsys/browse/collectionCfr.action?collectionCode=CFR