Tártaros Gonzalo Castelló - The world leading tartaric salt production company
Tartaric Products: Cream of Tartar, Rochelle Salt, Tartaric Acid, Potassium Tartrate
Sweeteners: Stevia-based Sweeteners, Saccharin-based Sweeteners, Aspartame-based Sweeteners, Cyclamate & Saccharin-based Sweeteners
Baking Ingredients: Baking Powder, Low Sodium Salt, Free Sodium Salt
With over a century of expertise, Tártaros Gonzalo Castelló S.L.U. is a globally recognized leader in the extraction and processing of tartaric derivatives. Headquartered in Novelda, Spain, the company has established itself as a cornerstone in the production of high-purity tartaric salts and natural food additives, serving clients across the food, beverage, pharmaceutical, and industrial sectors.
Founded in the early 20th century, Tártaros Gonzalo Castelló originated as a family business in the heart of Spain’s wine-producing region. Leveraging the natural by-products of winemaking, the company pioneered the industrial-scale extraction of tartaric salts and acids. Over the decades, it has grown from a local manufacturer into a world-renowned supplier with international reach and credibility.
Tártaros Gonzalo Castelló specializes in the production and refinement of tartaric acid and its derivatives, using cutting-edge technology and environmentally sustainable practices. The company’s portfolio is organized into three primary categories:
These products are used widely in baking, winemaking, pharmaceuticals, and laboratory applications.
Designed to cater to both the food and pharmaceutical industries, these sweeteners offer flexibility across dietary and regulatory requirements.
These innovations reflect the company’s commitment to healthier, reformulated food products aligned with modern consumer demands.
Tártaros Gonzalo Castelló’s USP lies in its vertically integrated production chain and dedication to natural, sustainable sourcing. The company is one of the few globally that produces tartaric acid and its derivatives exclusively from wine lees and grape marc—ensuring a 100% natural origin. This gives them a distinctive edge in quality-sensitive markets like organic foods and clean-label formulations.
Although a privately held company, Tártaros Gonzalo Castelló is estimated to generate annual revenues exceeding €10 million, driven by both European and international demand. Its production facilities in Spain supply to over 40 countries, including major markets such as the United States, Germany, France, and Japan.
Based on data from platforms like ImportYeti and Volza, Tártaros Gonzalo Castelló has completed more than 500 international shipments over the last five years. Major clients include food processing companies, beverage manufacturers, and global distributors of food-grade chemicals. Export shipments consistently include tartaric acid and Rochelle salt, highlighting the brand's dominance in this niche.
The company targets several industry verticals, including:
Their stronghold in organic-certified tartaric derivatives positions them especially well for brands aiming for clean-label and eco-conscious formulations.
Tártaros Gonzalo Castelló operates a high-capacity production facility equipped with advanced separation and crystallization technologies. The company is ISO 9001 and ISO 22000 certified, ensuring quality and food safety at all stages.
Sustainability is core to their process:
The company also aligns with European Commission directives for food-grade additives and has passed audits by several multinational clients.
Tártaros Gonzalo Castelló enjoys strong credibility across its global client base. Clients praise the company’s consistency in product quality, excellent documentation, and agile logistics. A customer from a major beverage brand commented:
“We’ve been sourcing tartaric acid from Castelló for over a decade, and the purity, documentation, and responsiveness are unmatched in the industry.”
With deep-rooted expertise and an unwavering commitment to quality, Tártaros Gonzalo Castelló S.L.U. continues to lead the way in tartaric innovation—supporting cleaner, safer, and more sustainable food systems globally.
