Rochelle salt

English

Etymology

From La Rochelle in France.

Noun

Rochelle salt (plural Rochelle salts)

  1. (inorganic chemistry) The double salt potassium sodium tartrate tetrahydrate (KNaC₄H₄O₆·4H₂O), used for various scientific and medical purposes.
    • 1998, Georgina Ferry, Dorothy Hodgkin: A Life:
      In fact, at the current state of knowledge and technology, probably only the simplest of the structures she worked on in Cambridge, Rochelle salt, could have been fully solved at the time.

Synonyms
  • Seignette salt
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