• Seignette salt
  • (2R, 3R) – 2,3 dihydroxybutane – 1,4 – dioïc acid, Potassium Sodium Salt, tetrahydrate
  • L (+) Tartaric Acid mono sodium mono Potassium Tartrate
  • Butanedioïc acid, 2,3 – dihydroxy -, [R(R*, R*)] -, monopotassium monosodium salt, tetrahydrate
  • Potassium sodium Tartrate
  • Monopotassium, monosodium tartrate, tetrahydrate

Physical properties


  •  White crystalline granulars or powder
  • Odourless
  • Slightly bitter taste
  • Density D204 of the solutions in water according to the concentration
  • Solubility in water at different temperatures
  • Almost insoluble in alcohol and ether


Product conform to the main pharmacopoiea (Ph Eur, USP, NF, JP….) Food grade Standards (Reg 2012/231/EC, FCC, JFAS….).


Rochelle Salt is mainly used in the following activity branches:

  • Galvanoplasty
  • Food Industry (manufacturing of pectins and gelatines)
  • Pharmaceutical Industry
  • Cigarette paper (combustion regulator)
  • Piezo-electricity
  • Treatment of metals
  • Gas purification
  • Encre for graphics
  • Mirrors silverplating
  • Laboratory reagent

Forms and presentations

Rochelle Salt is marketed in granulars and powder form. The bulk density is near to 1 for granulars ; near to 0,8 for powder.


Multiply  paper bags lined with polyethylene of 25 kgs net.

Storage / stability

Rochelle Salt must be kept in an airtight packing and stored in a dry place, away from humidity and in normal temperature conditions. It is a stable compound which does not alter with time if these storage advises are respected. A use-by date is however indicated according to the regulations : it is one year. This product tends to cake therefore a long storage is not recommended especially for the fine granular qualities.