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"More than 100 years of existence stand behind the activity of this company, which was established in 1907. Throughout its history, the steady growth and strong international expansion of Tártaros Gonzalo Castelló have made the company an international leader and standard-setter in the manufacturing and sale of natural tartaric acid salts and esters.

All the tartaric raw material used in the production process is derived from by-products of the grape, and is carefully selected and analyzed to ensure its traceability. This enables us to achieve continual monitoring during quality control of the production process.



Tradition together with Technology and Innovation have been and continue to be the basic elements of the strategic objectives of the company. This accounts for the excellent Quality of our products, which comply with the strictest international pharmacopeia requirements.
Innovation is a key element in our strategy. Our R&D Department devotes the effort that is necessary in order to diversify the scope of our activity and ensure constant improvement of our products.



Our ability to provide Service to our Customers is another of the pillars of our philosophy. It keeps us in close contact with their needs and help us to provide solutions that draw on the highest technological levels of the industry. Tártaros Gonzalo Castelló. Manufacturing natural tartaric acid salts since 1907. Distributed in more than 50 countries. Tradition linked to technology."

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Bonsweet is a sweetener. Sweeteners have revolutionized the single-portion packaging system, providing a series of major advantages over the traditional powder formulation. Tártaros Gonzalo Castelló granulated sweeteners make packaging easier, are homogeneous, diminish portion reductions that characterize powdered products, and increase packaging production capacity.

TARTAROS GONZALO CASTELLO SL Bonsweet

Tartaric Acid is present in many fruits and the only use for industrial production is grapes. Our Tartaric Acid is a natural product that is derived from by-products of the grape. Our Tartaric Acid is a food grade product and it is Kosher certified. Used in many different applications due to its properties as: antioxidant, acidifier, flavor enhancer, stabilizer and sequestering agent. It is included in the list of FOOD ADDITIVES under code E-334.

TARTAROS GONZALO CASTELLO SL Tartaric Acid

Potassium Tartrate, is a white powder. The product is NATURAL and is manufactured from natural raw materials. Manufacturing production process is followed by an exhaustive quality control guided through the expertise of our technical staff. The totality of the equipment has been designed by the most advanced technology and computer systems and built on stainless steel. It is included in the list of FOOD ADDITIVES under code E-336(ii).

TARTAROS GONZALO CASTELLO SL Potassium Tartrate

Cream of Tartar, also known as POTASSIUM BITARTRATE, is a white powder. It is a NATURAL product made from the natural crystalline acid deposited on the walls of wine-cellar vats. The production process includes strict and thorough quality control supervised by our engineers in order to ensure the ultimate quality of the product. Natural Cream of Tartar is included in the list of FOOD ADDITIVES under code number E-336(i).

TARTAROS GONZALO CASTELLO SL Cream of Tartar

Low-sodium salt with 60% less sodium are Oodorless, water-soluble white crystals with a salty taste. Ingredients: potassium chloride, sodium chloride, magnesium carbonate (anti-agglomerative) E-504 and potassium ferricyanide (anti-agglomerative) E-535.

TARTAROS GONZALO CASTELLO SL Low-sodium salt with 60% less sodium

Bonsalt 0% Sodium incorporates natural and food grade ingredients. Potassium Chloride, L-Lysine Mono-hydrochloride, Cream of Tartar, Glutamic Acid and Silicon Dioxide. They are naturally beneficial to the heart, substituting sodium with a content of potassium of 44.8 gr per 100 gr. Bonsalt is produced employing state of the art technologies in compliance with the strictest quality control standards. It, also, bears the Star-K Kosher for Passover Certification.

TARTAROS GONZALO CASTELLO SL Bonsalt 0% Sodium

Castelló Baking Powder a natural, low sodium baking powder. The product is also gluten free, phosphate free and aluminum free. It provides the finest texture and volume to your cakes, muffins and other baking products. The Double Acting Baking Powder assures uniform gas release, during all of the baking process, thus assuring the highest quality of the finished product.

TARTAROS GONZALO CASTELLO SL Castelló Baking Powder

Rochelle Salt, also known as POTASSIUM SODIUM TARTRATE, is a white crystalline powder or colorless 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 pharmacopeias. Because of its widely diversified applications, we offer the product in colorless crystals and also in white crystalline powder. Rochelle salt is included in the list of FOOD ADDITIVES under code E-337.

TARTAROS GONZALO CASTELLO SL Rochelle Salt

Castevia (1:8) is a sweetener with Erythritol (E-968) and Steviol (E-960).

TARTAROS GONZALO CASTELLO SL Castevia (1:8)

TARTAROS GONZALO CASTELLO SL

"More than 100 years of existence stand behind the activity of this company, which was established in 1907. Throughout its history, the steady growth and strong international expansion of Tártaros Gon

Tártaros Gonzalo Castelló - Tartaric Acid - Quality - Service

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Low-sodium salt with 50% less sodium are odorless, water-soluble white crystals with a salty taste. Ingredients: sodium chloride, potassium chloride, magnesium carbonate (anti-agglomerative) E-504 and potassium ferricyanide (anti-agglomerative) E-535.

TARTAROS GONZALO CASTELLO SL Low-sodium salt with 50% less sodium

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