What is the maximum flashpoint temperature for a liquid to be considered flammable?

The classification of a liquid as flammable is determined by its flashpoint temperature, which is the lowest temperature at which it can form an ignitable mixture with air. For a liquid to be considered flammable, its flashpoint must be at or below 199.4 degrees Fahrenheit.

Choosing 199.4 degrees Fahrenheit aligns with the OSHA definition, which states that any liquid with a flashpoint of 199.4 F or below is indeed classified as flammable. This categorization is crucial for safety regulations and hazard assessments in workplaces, ensuring appropriate precautions are taken to handle and store such materials safely.

Options indicating higher temperatures, such as those around 200.5 F and 190.4 F, exceed the threshold for flammability, thus categorizing the liquids as combustible rather than flammable. A flashpoint of 150.0 F is significantly lower than 199.4 F, but does not align with the specific classification criteria that distinguishes flammable from combustible liquids under OSHA guidelines.