Alkali waste

1.Waste material from the manufacture of alkali; specif., soda waste.
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Wastes are considered hazardous if they are listed under the Classification of Prescribed Hazardous Wastes, which groups substances as wastes with cyanide, acid waste, alkali wastes, wastes with inorganic chemicals, reactive chemical wastes, waste organic solvent, oil, containers, immobilized wastes and organic chemicals, the law says.
Now I must tell you that in that land, a mad hermit lived in a pit yurt, out on the alkali wastes.