CAS Registry Number: [527-07-1]

Chemical Formula: C₆H₁₁NaO₇

E-Number: E576

Sodium gluconate is the sodium salt of gluconic acid, produced by fermentation of glucose. It is a white to tan, granular to fine, crystalline powder, very soluble in water. Non corrosive, non-toxic and readily biodegradable (98 % after 2 days), sodium gluconate is more and more appreciated as chelating agent.

The outstanding property of sodium gluconate is its excellent chelating power, especially in alkaline and concentrated alkaline solutions. It forms stable chelates with calcium, iron, copper, aluminium and other heavy metals, and in this respect, it surpasses all other chelating agents, such as EDTA, NTA and related compounds.

Aqueous solutions of sodium gluconate are resistant to oxidation and reduction, even at high temperatures. However, it is easily degraded biologically (98 % after 2 days), and thus presents no wastewater problem.

Sodium gluconate is also a highly efficient set retarder and a good plasticiser / water reducer for concrete, mortar and gypsum. It has the property to inhibit bitterness in foodstuffs.

Specifications & Package

We can offer a food and technical grade of sodium gluconate.

The sodium gluconate food grade is supplied in accordance with the latest requirements of the United States Pharmacopeia (USP), the Food Chemicals Codex (FCC) and of Commission Regulation (EU) No. 231/2012. Specifications are available on request.

The product is available as granular material and powder. Special granulations are available upon request.

Packing in 25 kg net polyethylene (LDPE) bags/25kg net cardboard drums or in 1000 kg net polypropylene big bags.

Applications & Main functions

• Excellent chelating agent
• Efficient plasticiser / water reducer
• Efficient set retarder
• Bitterness inhibitor

In Europe, sodium gluconate is listed as a generally permitted food additive (E576) and may be added to all foodstuffs, following the "quantum satis" principle, as long as no special regulation restricts the use.

In the USA, the Food and Drug Administration (FDA) affirmed sodium gluconate as generally recognised as safe (GRAS) and permitted the use in food as sequestrant (21 CFR §182.6757) or nutrient supplement with no limitation other than current good manufacturing practice.

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