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Sodium gluconate (CAS 527-07-1) is a widely used compound known for its excellent chelating properties and biodegradability. This article explores its key characteristics, production methods, and diverse applications across various industries.
Sodium gluconate is the sodium salt of gluconic acid, produced through the fermentation of glucose. It is a white to light yellow crystalline powder, highly soluble in water and slightly soluble in alcohol. Its chemical formula is C₆H₁₁NaO₇, with a molecular weight of approximately 218.14 g/mol.
| Property | Value |
|---|---|
| Molecular Formula | C₆H₁₁NaO₇ |
| Molecular Weight | 218.14 g/mol |
| Appearance | White to light yellow crystalline powder |
| Solubility in Water | Highly soluble |
| pH | 7.0-8.0 (1% solution) |
Sodium gluconate is primarily produced through the fermentation of glucose using microorganisms such as Aspergillus niger or Pseudomonas. After fermentation, gluconic acid is neutralized with sodium hydroxide to form sodium gluconate.
| Step | Process Description |
|---|---|
| Fermentation | Glucose fermented by microorganisms to produce gluconic acid |
| Neutralization | Gluconic acid reacted with sodium hydroxide |
| Purification | Crystallization, filtration, and drying |
Sodium gluconate's versatility is evident in its use across multiple industries:
Cleaning Products: Acts as a chelating agent, binding metal ions like calcium and magnesium to enhance cleaning efficiency.
Construction: Used as a concrete admixture to improve workability, delay setting time, and increase strength.
Water Treatment: Functions as a descaling agent and corrosion inhibitor, preventing scale formation in boilers and cooling systems.
Personal Care Products: Serves as a preservative and skin-conditioning agent in cosmetics.
| Industry | Application |
|---|---|
| Cleaning Products | Chelating agent in detergents and cleaning agents |
| Construction | Concrete admixture, plasticizer, and retarder |
| Water Treatment | Descaling agent and corrosion inhibitor |
| Personal Care | Preservative and skin-conditioning agent |
Sodium gluconate is non-toxic, biodegradable, and generally recognized as safe (GRAS) by regulatory authorities such as the FDA. Its low toxicity and environmental friendliness make it a preferred choice for sustainable industrial applications.
In conclusion, sodium gluconate (CAS 527-07-1) is a valuable compound with a wide range of applications, making it an essential component in various sectors. Its eco-friendly nature and effectiveness ensure its continued importance in both commercial and industrial contexts
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