| Rating | Solver | Clue |
|---|---|---|
| ACID | Caustic substance | |
| ESCHAROTIC | A substance which produces an eschar; a caustic, esp., a mild caustic. | |
| METACROLEIN | A polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odor. | |
| POTASH | The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash. | |
| RESORCIN | ...eries, obtained by melting certain resins, as galbanum, asafetida, etc., with caustic potash. It is also produced artificially and used in makin... | |
| LIME | Oxide of calcium; the white or gray, caustic substance, usually called quicklime, obtained by calcining limestone or shells, the heat driving o... | |
| INDOL | ...th skatol, by putrefaction, and by fusion with caustic potash, and is present in human excrement, as well as in the intestinal canal of some her... | |