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Potassium sodium tartrate tetrahydrate, also known as Rochelle salt, is a double salt of tartaric acid first prepared (in about 1675) by an apothecary, Pierre Seignette, of La Rochelle, France. Potassium sodium tartrate and monopotassium phosphate were the first materials discovered to exhibit piezoelectricity. [3]
Sodium potassium tartrate is a double salt of tartaric acid with a chemical formula C 4 H 4 O 6 KNa·4H 2 O. It is also known as Rochelle salt or Potassium sodium tartrate. It is a colourless to white crystalline powder with a cool and saline taste. It has a pH value of 6.5 – 8.5.
Rochelle salt, a crystalline solid having a large piezoelectric effect (electric charge induced on its surfaces by mechanical deformation due to pressure, twisting, or bending), making it useful in sensitive acoustical and vibrational devices. Like other piezoelectric materials, Rochelle salt.
Jul 9, 2024 · What is Rochelle Salt? Rochelle salt is a natural salt. Its chemical name is sodium potassium tartrate tetrahydrate. Rochelle salt is also called a double salt of tartaric acid. The first production of the same was done in the year 1675.
Jul 1, 2019 · Rochelle salt or potassium sodium tartrate is an interesting chemical that is used to grow large single crystals, which are attractive and interesting, but also may be used as transducers in microphones and gramophone pickups.
Mar 18, 2021 · Rochelle salt yields large piezoelectric crystals, used for science experiments and as transducers in microphones and gramophone pickups. The chemical is a food additive that imparts a cooling, salty flavor.
Rochelle salt is a potassium-sodium tartratetetrahydrate (KNaC4 H 4 O 6 •4H 2 O) and belongs to the family of uniaxial ferroelectrics. This was the first material in which Valasek discovered the ferroelectric phenomenon in 1921, and from which he also introduced the term Curie temperature or Curie point for ferroelectrics.
