Potassium Sodium Tartrate 99+%, Pure, Food Grade, E337 1KG

What is Potassium Sodium Tartrate? | All about Rochelle Salt

Potassium sodium tartrate, also known as Rochelle salt or Seignette’s salt, is a chemical compound with the formula KNaC₄H₄O₆·4H₂O. It is the double salt of tartaric acid with sodium and potassium ions and is widely used in industrial, analytical, and scientific applications.

This compound appears as colorless to white crystals that are highly soluble in water. It was originally discovered in the 17th century in the French city of La Rochelle — hence the name “Rochelle salt.”

Applications of Potassium Sodium Tartrate

Potassium sodium tartrate has a wide range of applications across different sectors:

1. In analytical chemistry

• Used as a complexing agent in titrations, especially in the determination of metals such as copper, aluminum, and nickel.
• Plays an important role in Fehling’s reagent, which is used to detect reducing sugars.

1. In the pharmaceutical industry

• Sometimes used as a mild laxative.
• Can serve as a stabilizer in medicinal formulations.

1. In electrical engineering

• Rochelle salt is a piezoelectric material: when subjected to pressure, it generates an electric voltage. This makes it useful in certain types of sensors, microphones, and crystal oscillators.

1. In laboratories

• As a buffer solution or in crystallization processes.
• Suitable for experiments requiring specific pH values.

High quality, guaranteed
Our potassium sodium tartrate meets strict quality standards and is suitable for professional use in laboratories, educational institutions, and industry. Each product is carefully tested for purity, ensuring consistent and reproducible results.