Waste organic solvents, refrigerants, and propellants covered by Chapter 14 of the List of Wastes. Includes halogenated and non-halogenated solvents, solvent mixtures, and sludges from solvent recovery. Most solvent wastes are Absolute Hazardous entries due to flammability, toxicity, and environmental harm. Common sources include industrial cleaning, degreasing, paint thinning, and laboratory operations. Solvent waste requires specialist recovery or disposal at authorised hazardous waste facilities.