Products Description
Sodium gluconate is a white or pale yellow crystalline powder that is soluble in water and slightly soluble in alcohols, but insoluble in ethers. Its chemical formula is C6H11NaO7 and its molecular weight is 218.14. As a polyhydroxy carboxylic acid salt, sodium gluconate has excellent chelating ability, which can form stable complexes with metal ions such as calcium, magnesium, and iron, thereby effectively inhibiting the precipitation and scaling of metal ions. In addition, sodium gluconate also has good corrosion inhibition properties, which can form a protective film on the metal surface, delaying the corrosion process.
Physical and chemical properties
Solubility: Sodium gluconate is highly soluble in water. At 20℃, its solubility can reach 59g/100mL, and its solubility increases with the rise in temperature.
2. Stability: It remains stable at room temperature, resistant to high temperatures, and does not easily decompose even in a strongly alkaline environment.
3. pH value: The aqueous solution has a weak alkaline nature, with a pH value ranging from 8 to 9.
4. Chelating ability: It has a strong chelating effect on divalent and trivalent metal ions (such as Ca²⁺, Mg²⁺, Fe³⁺), effectively preventing the formation of scale.
Main purpose
The construction industry
Concrete retarder: Sodium gluconate can slow down the hydration reaction of cement, prolong the initial and final setting times of concrete, and is suitable for concrete projects constructed in hot seasons or with long-distance transportation.
Water reducer: When used in combination with high-efficiency water reducer, it can enhance the workability of concrete, reduce water consumption, and increase strength.
2. Water Treatment Industry
Scale inhibitor: Used in industrial water systems such as circulating cooling water and boiler water to prevent the deposition of calcium and magnesium salts, thereby extending the service life of equipment.
Cathodic protection agent: When combined with zinc salts, organic phosphates, etc., it enhances the protective effect on metal pipelines.
3. Food Industry
Acidity regulator: As a food additive, it is used to adjust the pH value and improve the taste of food.
Chelating agent: Used in beverages, canned foods, and other types of food to stabilize metal ions and prevent discoloration and precipitation.
4. Medicine and Cosmetics
Drug excipients: Used as disintegrants or stabilizers for tablets.
Cosmetic additive: Due to its mild chelating property, it can be used in cleansing products to prevent the irritation of hard water on the skin.
5. Other Applications
- Electroplating industry: As a complexing agent, it enhances the glossiness and uniformity of the coating layer.
Textile dyeing and printing: Used as a metal ion blocker to prevent dye precipitation and improve the uniformity of dyeing.
Sodium gluconate, as a green chemical, has great potential in replacing traditional phosphorus-containing water treatment agents. Moreover, its applications in the fields of food and medicine are continuously expanding with the advancement of technology.
The WF separation type granulator produced by Our Fangyuan Machinery is highly suitable for grinding large quantities of sodium gluconate. The grinding fineness can reach around 100 mesh. If finer mesh is required, it can also be achieved.
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