(n) :
Alternative form of salt cake. [(historical) Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc.]
(n) :
Alternative form of salt cake. [(historical) Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc.]