C.R.S.
Section 8-20-202
Classification of liquid fuel products
(1)
“Liquid” means any material that has a fluidity greater than that of three hundred penetration asphalt when tested in accordance with ASTM specifications that are found in publication number D 5, “Test for Penetration of Bituminous Materials”. Unless otherwise identified, the term “liquid” shall include both flammable and combustible liquids.(2)
“Flammable liquid” or “class I liquid” means a liquid that has a flash point below one hundred degrees Fahrenheit and a vapor pressure not exceeding forty PSIA at one degree Fahrenheit. Class I liquids are subdivided as follows:(a)
Class IA liquids have a flash point below seventy-three degrees Fahrenheit and a boiling point below one hundred degrees Fahrenheit.(b)
Class IB liquids have a flash point below seventy-three degrees Fahrenheit and a boiling point at or above one hundred degrees Fahrenheit.(c)
Class IC liquids have a flash point at or above seventy-three degrees Fahrenheit and below one hundred degrees Fahrenheit.(3)
“Combustible liquid” means a liquid that has a flash point at or above one hundred degrees Fahrenheit. Combustible liquids are subdivided as follows:(a)
Class II liquids have a flash point at or above one hundred degrees Fahrenheit and below one hundred forty degrees Fahrenheit.(b)
Class IIIA liquids have a flash point at or above one hundred forty degrees Fahrenheit and below two hundred degrees Fahrenheit.(c)
Class IIIB liquids have a flash point at or above two hundred degrees Fahrenheit.
Source:
Section 8-20-202 — Classification of liquid fuel products, https://leg.colorado.gov/sites/default/files/images/olls/crs2024-title-08.pdf (accessed May 26, 2025).