an impure form of sodium sulphate obtained as a by-product in several industrial processes: used in the manufacture of detergents, glass, and ceramic glazes
WordReference Random House Unabridged Dictionary of American English © 2025
salt′ cake′, [Chem.]
- Chemistryan impure form of sodium sulfate, esp. as obtained by the interaction of sulfuric acid and common salt in the synthesis of hydrochloric acid: used chiefly in the manufacture of glass, ceramic glazes, soaps, and sodium salts.
- 1695–1705
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