Company

Tártaros Gonzalo Castelló. Manufacturers of natural tartaric acid salts since 1907. Distributed in more than 90 countries. Tradition meets technology.

With over a century of experience, Tártaros Gonzalo Castelló has established itself as an international leader in the production and marketing of natural tartaric acid salts and esters. Founded in 1907, the company combines tradition and technology to deliver products of the highest quality, now present in more than 90 countries. Its steady growth and strong commitment to innovation have made it a global benchmark in the industry.

Furthermore, expanding its dedication to excellence and diversification, the company also specializes in the manufacturing and packaging of sweeteners and iced teas, developing solutions tailored to the evolving demands of the food market.

About us

Tártaros Gonzalo Castelló is a company specialized in the production of natural tartaric acid salts since 1907. With a presence in more than 90 countries, our long-standing history combines tradition, technology, and innovation to deliver products of the highest quality.

All the tartaric raw materials used in our processes come from carefully selected grape by-products, thoroughly analyzed to ensure full traceability. This rigorous control allows us to monitor every stage of the production process, guaranteeing exceptional quality standards.

Tradition, technology, and innovation have always been—and continue to be—the fundamental pillars of our business strategy. As a result, our products meet the most demanding requirements of international pharmacopeia.

Innovation plays a central role in our philosophy. Our R&D department works continuously to broaden the scope of our activities and to constantly improve our products.

Furthermore, our strong customer service capabilities are another key aspect of our identity, allowing us to maintain close relationships with our clients’ needs and to offer tailored solutions based on the most advanced technologies in the industry.

We are quality

We Are Quality

At Tártaros Gonzalo Castelló, quality is the cornerstone of our activity. Through a rigorous control system, we ensure that our products reach consumers with the highest guarantees of safety and excellence.

FSSC 22000 Certification

We comply with the FSSC 22000 standard, one of the most demanding certifications worldwide for food quality and safety. This certification confirms that our production and packaging processes meet the highest international requirements.
Certified products include: cream of tartar, Rochelle salt, tartaric acid, dipotassium tartrate, baking powder, low-sodium salt, sodium-free salt, stevia-based sweeteners, saccharin-based sweeteners, aspartame-based sweeteners, and cyclamate-saccharin-based sweeteners.

Kosher and Halal Certifications

All our products are Kosher and Halal certified, ensuring compliance with the cultural and religious requirements of quality and purity.

International Pharmacopeia Standards

Our products stand out for their exceptional quality and comply with the strictest standards of the international pharmacopeia, including the regulations of Europe, the United States, Japan, and other countries.