Wis. Admin. Code NR 661.0021

Characteristic of ignitability

Last amended: 2025Year: 2026Length: 561 wordsOfficial source

Cite as Wis. Admin. Code NR § 661.0021

Characteristic of ignitability. (1) A solid waste exhibits the characteristic of ignitability if a representative sample of the waste has any of the following properties: (a) It is a liquid, other than a solution containing less than 24 percent alcohol by volume and at least 50 percent water by weight, that has a flash point less than 60 degrees Celsius or 140 degrees Fahrenheit, as determined by using one of the following ASTM standards: ASTM D93-79, D93-80, D3278-78, D8174-18, or D8175-18 as specified in SW-846 Test Methods 1010B or 1020C, incorporated by reference under 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 an ignitable compressed gas. An ignitable compressed gas is a gas with all of the following characteristics: 1. A compressed gas is a material or mixture having in the container an absolute pressure exceeding 40 pounds per square inch at 70 degrees Fahrenheit or, regardless of the pressure at 70 degrees Fahrenheit, having an absolute pressure exceeding 104 p.s.i. at 130 degrees Fahrenheit; or a liquid flammable material having a vapor pressure exceeding 40 p.s.i. absolute at 100 degrees Fahrenheit as determined by ASTM Test D323-20. 2. A compressed gas shall be characterized as ignitable if any one of the following occurs: a. Either a mixture of 13 percent or less, by volume, with air forms a flammable mixture or the flammable range with air is wider than 12 percent, regardless of the lower limit. These limits shall be determined at atmospheric temperature and pressure. The method of sampling and test procedure shall be the ASTM E681-09, incorporated by reference under s. NR 660.11 , or other equivalent methods approved by the associate administrator of the pipeline and hazardous materials safety administration in the U.S. department of transportation. b. It is determined to be flammable or extremely flammable under 49 CFR 173.115 (l) . (d) It is an oxidizer. An oxidizer for the purpose of this subchapter is a substance that yields oxygen readily to stimulate the combustion of organic matter, for example, a chlorate, permanganate, inorganic peroxide, or a nitrate. An oxidizer is any of the following: 1. An organic compound containing the bivalent -O-O- structure and that may be considered a derivative of hydrogen peroxide when one or more of the hydrogen atoms have been replaced by organic radicals shall be classed as an organic peroxide unless it has any of the following characteristics: a. The material meets the definition of a division 1.1, 1.2, or 1.3 explosive under s. NR 661.0023 (1) (h) , in which case it shall be classed as an explosive. b. The material is forbidden to be offered for transportation under 49 CFR 172.101 and 49 CFR 173.21 . c. It is determined that the predominant hazard of the material containing an organic peroxide is other than that of an organic peroxide. d. According to data on file with the pipeline and hazardous materials safety administration in the U.S. department of transportation, it has been determined that the material does not present a hazard in transportation. (2) A solid waste that exhibits the characteristic of ignitability has the EPA hazardous waste number of D001.
Wis. Admin. Code NR 661.0021: Characteristic of ignitability | Justis AI