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Flammable and combustible liquids

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Flammable and combustible liquids are liquids that burn when they give off enough vapors to ignite. They are classified as either flammable or combustible by their flashpoints.

A flashpoint is the lowest temperature at which a liquid gives off enough vapor to ignite at the surface of the liquid. Flashpoints are intended to be used as guides and not as fine lines between safe and unsafe.

Flammable and combustible liquids are present in almost every workplace. Fuels and many common products, such as solvents, thinners, cleaners, adhesives, paints, waxes, and polishes, may be flammable or combustible liquids.

  • Checklists
  • Fact sheets
    • Chemical storage guidelines, flammables
      Describes the characteristics of flammable and cobustible liquids, gives examples of common combustible and flammable materials, and offers guidelines for storing them properly.
      English  02/15/2023
    • Craft distilleries
      Describes the hazards involved in craft distilling, hazard controls, and safe practices for distilling.
      English  11/25/2014
    • Flammable liquids
      Describes basic storage, transfer, and transport requirements for the four classifications of flammable liquids.
      English  06/28/2017
    • Isocyanates
      Describes what isocyanates are, why they're extreme health hazards, and how employees can protect themselves.
      English  12/08/2014
  • Hazard alerts
  • References
    • Rules with requirements
      We get many calls and emails from employers asking the same question. It begins: “Which of your rules have requirements for…” You can finish the sentence with words like “recordkeeping,” “employee training,” and “written documents.” To answer those questions, we’ve organized these rules requirements into a filterable, sortable, searchable table.
      English  05/10/2019

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