Chemicals

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General Information

Rochelle Salt

Rochelle salt can be made by using the making rochelle salt experiment.[1]

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Chemical & Physical Information

Trivial nameRochelle salt
Chemical namePotassium sodium tartrate, tetrahydrate
Other namesSeignette salt (EN), Rochelle zout (NL,BE)
Type of chemicalIonic compound (salt)
Chemical formulaKNaC4H4O6, 4H2O
CAS number304-59-6 (anhydrous)
6381-59-5 (tetrahydrate)
Density1.79 g·cm-3
Molar mass282.22 g·mol-1
Melting point70-80 °C
Boiling point-
SolubleIn water
Solubility (water, 20 °C)630 g·L-1
Crystal systemTriclinic
AppearanceWhite crystalline solid
ColourWhite
Safety summarySafe
Safety dataMSDS
StorageDry
Extra-
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Photos

Rochelle Salt

(3 cm)

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Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.

[3] Mullin J.W. - Crystallization, 2001