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U List of Hazardous Wastes
www.pca.state.mn.usExamples • Hydrofluoric acid is the sole active ingredient in some glass etching compounds. These compounds would be U listed as U134 hazardous wastes if disposed of without being used. • Some rust-remover compounds, however, contain phosphoric and oxalic acids in addition to hydrofluoric acid as active ingredients. These compounds would not be U-listed wastes when …