Oregon OSHA’s hazard communication rule for general industry, Hazard Communication, 1910.1200, defines a hazardous chemical as any chemical that is classified as a physical hazard, a health hazard, a simple asphyxiate, combustible dust, pyrophoric gas, or a “hazard not otherwise classified.”
Chemicals that are physical hazards are:
Chemicals that are health hazards are classified by how they affect tissue, vital organs, or internal systems. These health effects include:
Health effects also range from short-duration symptoms that often appear immediately (acute effects) to persistent symptoms that usually appear after longer exposures (chronic effects).
A simple asphyxiate is a substance or mixture that displaces oxygen in the ambient atmosphere and can cause oxygen deprivation in those who are exposed.
Combustible dust is a particulate solid that becomes a fire hazard or deflagration hazard when suspended in air or other oxidizing medium over a range of concentrations.
A pyrophoric gas is a chemical in a gaseous state that will ignite spontaneously in air at a temperature of 130 degrees F or below.
These are chemicals that may have adverse physical or health effects (based on scientific evidence), but do not currently meet federal OSHA’s criteria for a physical or health hazard.
These hazards do not have to be disclosed on a label but must be disclosed in section two of a Safety Data Sheet. Chemical manufacturers and importers are expected to assess these hazards when they are evaluating their products’ physical and health hazards.
A chemical is hazardous if it is listed in one of the following documents: