Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 661 - Hazardous Waste Identification And Listing
Subchapter C - Characteristics of Hazardous Waste
Section NR 661.0021 - Characteristic of ignitability

(a) It is a liquid, other than an aqueous solution containing less than 24 percent alcohol by volume, and has flash point less than 60°C or 140°F, as determined by a Pensky-Martens Closed Cup Tester, using the test method specified in ASTM Standard D 93-79 or D 93-80, incorporated by reference in s. NR 660.11, or a Setaflash Closed Cup Tester, using the test method specified in ASTM Standard D 3278-78, incorporated by reference in s. NR 660.11.

(b) It is not a liquid and is capable, under standard temperature and pressure, of causing fire through friction, absorption of moisture or spontaneous chemical changes and, when ignited, burns so vigorously and persistently that it creates a hazard.

(c) It is a flammable gas as defined in 49 CFR 173.115(a) and as determined by the test methods described in that regulation or equivalent test methods approved by the department under ss. NR 660.20 and 660.21.

(d) It is an oxidizer as defined in 49 CFR 173.127(a) and as determined by the test methods described in that regulation or equivalent test methods approved by the department under ss. NR 660.20 and 660.21.