Potassium Sodium Tartrate Tetrahydrate 98% (Rochelle Salt)


Potassium Sodium Tartrate Tetrahydrate 98%, also known as Rochelle Salts, is a colourless to blue-white salt crystallizing in the orthorhombic system. Its molecular formula is KNaC4H4O6.4H2O. It is slightly soluble in alcohol but more completely soluble in water.

  • Used in food additive E337
  • Used medicinally as a laxative
  • Organic synthesis to break up emulsions
  • Common precipitant in protein crystallography

Minimum Assay: >98%
Molecular Formula: C4H4KNaO6•4H2
Molecular Weight: 282.23
Solubility in water (% weight): Soluble in water
Chloride (Cl): <0.005%
Sulphate (SO4): <0.05%
Acidity or Alkalinity:  Max 1 ml N% 

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 6381-59-5
Einecs No: 206-156-8

HS CODE: 2918130000


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Additional information

Weight N/A
Pack Size

500gm, 1Kg, 2.5Kg, 5Kg, 25Kg