Ferrous Gluconate Dihydrate | Cas 12389-15-0, E579 | Food Grade Iron Fortifier & pH Regulator

Basic Information

Character

1.Yellowish-grey to pale greenish-yellow crystalline powder, with a slight caramel-like odor and faint metallic taste that is milder than inorganic iron salts.

2.Readily soluble in warm water, forming a pale yellow-green solution; insoluble in ethanol.

3.Organic ferrous (Fe²⁺) form with good bioavailability, directly absorbable by the human body.

4.Milder gastrointestinal irritation compared to ferrous sulfate, reducing nausea, stomach discomfort and off-flavor in the mouth.

5.Dihydrate form is the conventional commercial grade with stable crystallization, easier handling and wider acceptance by food and supplement manufacturers.

6.Anhydrous form contains no crystal water, with higher iron content, but requires stricter moisture and oxygen control during storage.

7.Iron is prone to oxidation and color change under high pH, heat and long air exposure; formulation pH control and packaging protection are required.

8.Food grade and pharmaceutical grade comply with international standards for mineral fortification.

Main Functions

1.Iron Fortification Function: Provides bioavailable organic ferrous iron for mineral enrichment in cereals, bakery, dairy, plant-based milk and dietary supplement tablets, capsules and oral liquids.

2.Acidity Regulating Function: Acts as mild pH regulator to assist in stabilizing food systems during processing and shelf life.

3.Color Stability Auxiliary Function: Requires pH control and packaging protection to prevent undesired oxidation browning and discoloration of finished products.

Applications

Food & Dietary Supplement Industry:  Ferrous Gluconate is mainly applied as an organic iron fortifier in breakfast cereals, bakery products, meal replacement powders, dairy drinks, plant-based milk, infant formula and other iron-enriched foods. It is also widely used as an iron source in dietary supplement tablets, capsules, oral liquids and powder sachets. Dihydrate grade is the mainstream choice for general food and supplement production, while anhydrous grade is selected for moisture-sensitive and high-end formulations. Its mild taste and better tolerance make it suitable for sensitive groups and long-term iron supplementation.

Pharmaceutical Industry : Pharmaceutical grade Ferrous Gluconate is used as iron source in oral iron supplements and therapeutic preparations with relatively low consumption.