Electron microscopy
 
NaKC4H4O6•4H2O
- Practical Electron Microscopy and Database -
- An Online Book -
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This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
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The double salt, potassium sodium tartrate (NaKC4H4O6•4H2O), was first prepared by an apothecary, Pierre Seignette, of La Rochelle, France in ~1675. Because of this discovery, the salt was known as Seignette salt or Rochelle salt. Note that rochelle salt is not the same as rock salt.

Table 3544. Characteristics of NaKC4H4O6•4H2O.

Structure type Orthorhombic
Curie temperature (°C)
-18


-18
Monoclinic
Curie temperature (°C)
24


24
Orthorhombic
Space group P21212 (18) P21 (4) P21212 (18)
Property Piezoelectric Ferroelectric Piezoelectric
Ferroelectric polarization ( μC/cm2)   0.25  

 

 

 

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