Which statement best describes Class 3 combustible liquids' flashpoint?

Which statement best describes Class 3 combustible liquids' flashpoint?

• A. Less than 60°C
• B. Greater than 60°C and less than 93°C
• C. Exactly 60°C
• D. Greater than 93°C

Answer: (B)

A liquid’s flashpoint is the lowest temperature at which enough vapor is produced to ignite in the presence of an ignition source. Class 3 combustible liquids are defined by having higher flashpoints than flammable liquids, meaning they need more heat before ignitable vapors form. In many common safety classifications, the range that best describes Class 3 combustible liquids sits between 60°C and 93°C. Liquids with flashpoints below 60°C are considered flammable rather than combustible, and those with flashpoints above 93°C belong to a higher flashpoint subgroup. Therefore, the statement that best fits Class 3 combustible liquids is that their flashpoints are greater than 60°C and less than 93°C.

A liquid’s flashpoint is the lowest temperature at which enough vapor is produced to ignite in the presence of an ignition source. Class 3 combustible liquids are defined by having higher flashpoints than flammable liquids, meaning they need more heat before ignitable vapors form. In many common safety classifications, the range that best describes Class 3 combustible liquids sits between 60°C and 93°C. Liquids with flashpoints below 60°C are considered flammable rather than combustible, and those with flashpoints above 93°C belong to a higher flashpoint subgroup. Therefore, the statement that best fits Class 3 combustible liquids is that their flashpoints are greater than 60°C and less than 93°C.