potassium sodium tartrate(redirected from Seignette, Pierre)
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potassium sodium tartrate[pə′tas·ē·əm ′sōd·ē·əm ′tär‚trāt]
KNaC4H4O6·4H2O Colorless, water-soluble, efflorescent crystals or white powder with a melting point of 70-80°C; used in medicine and as a buffer and sequestrant in foods. Also known as Rochelle salt; Seignette salt.