tartaric
Cream of Tartar   Tradition linked with technology   Rochelle salt   Contact


cream of tartar

Rochelle Salt is a white crystalline powder or colourless crystal, which is obtained by treating the natural raw tartaric material.

Our Rochelle Salt is manufactured in a completely automatic unit plant. From this optimum automation, we are able to control every step at the production process and guarantee a natural product of high quality, which conforms to the latest requirements of the international pharmacopoeias.

Respectful of the strict norms, Tártaros Gonzalo Castelló S.L., has a modern Rochelle Salt facility fitted out with the most reliable and environmentally friendly safety devices in stainless steel. In order to achieve this aim we are commited to a laboratory Research & Development program to continue securing a Rochelle Salt suply, produced with the most innovative techniques.



applications

Electroplating:

In galvanising baths, allows to increase anonic solubility, makes possible to work at higher current densities, and creates a greater surface uniformity.

Semiconductors:

In the manufacturing process.

Silvering of mirrors:

Used as reducing agent.




Food industry:

It may be added to any foodstuffs as there is no legal regulation that restricts its use. It is mainly used in the production of pectin.

Wall Plaster:

Delay the onset of hardness and allows mechanical approving procedure.

Cigarettes

Used to delay the consumption of the cigarette paper.



chemical characteristics

identification
Chemical name: Potassium Sodium Tartrate.
Rochelle Salt.
Seignette Salt.
Chemical Formula: NaKC4H4O6, 4H2O
Molecular Weight: 282,23
C.A.S. No.: 6381-59-5
C.E.E. No.: E 337
Description: White crystallyne powder or colourless crystal.


physical properties
Melting Point: 70o - 80oC
Solubility in Water: 73g. Rochelle Sat/100g. water at 20oC.
Practically insoluble in alcohol.
Crystal System: Rhombic crystals.


ingredients
Richness: Not less than 99% and not more than 102% of C4H4KNaO6
Main impurities: According to the limits stablished by the FCC, BP, USP and NF last editions.