Potassium sodium tartrate

Potassium sodium tartrate, or Rochelle salt, is historically known for its piezoelectric properties. Today, however, used for various applications such as electroplating baths and silver plating mirrors. It can also act as a retardant for construction material and in food as a food additive, E337, for production of pectins and jellies.

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C₄H₄KNaO₆ · 4H₂O

Details

Chemical Formula

C₄H₄KNaO₆ · 4H₂O

EC Number

206-156-8

CAS Number

6381-59-5

Industries

Surface treatment & Coatings
Home & Personal care

Applications

Electroplating
Electronics
Food additive

Specification

Assay: 99-102%
Water: 21-27%
Heavy metals: max. 0.001%

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