Sodium gluconate is the sodium salt of gluconic acid (pentahydroxy-caproic or -hexanoic acid), obtained from glucose by fermentation. It possesses good sequestering activity in cleaning baths and is highly stable, even in concentrated alkaline solutions.
Sodium gluconate is a white to tan, granular to fine, practically odorless crystalline powder. It is very soluble in water and yet not hygroscopic. It is sparingly soluble in ethanol and insoluble in ether. Sodium gluconate is easily biodegradable and thus presents no wastewater problem.
It forms stable chelates with iron, aluminium, calcium, zinc and other heavy metals, especially in alkaline solution. Being non- toxic and physiologically compatible, foodstuff articles can be treated with it without any risk. Aqueous solutions of sodium gluconate are resistant to oxidation and reduction, even at high temperatures, and have no corrosive action.