Sodium Gluconate

Sodium gluconate, also called sodium salt of gluconic acid, is produced by fermentation of glucose. Its molecular formula is C6H11NaO7. The appearance is white crystalline powder, so it is very soluble in cold and hot water. This salt is non-toxic, non-corrosive, biodegradable and readily biodegradable, and can resist oxidation and degradation even at extremely high temperatures.

Of course, sodium gluconate has a wide range of industrial uses. For example, it can be used as concrete admixture, high-efficiency chelating agent, steel surface cleaner, glass bottle cleaner, and electroplating industrial aluminum oxide coloring in the construction, textile printing and dyeing, metal surface treatment, and water treatment industries. Especially in the construction industry, sodium gluconate always plays an important role. With the development of urban high-rise buildings, urban mixing stations, high-speed railways, water conservancy and other infrastructure, Kingsun sodium gluconate 98% has achieved good results as a concrete set retarder and water reducer.

Technical Specifications of Sodium Gluconate Powder

Item	Sodium Gluconate (CAS 527-07-1)
Appearance	White crystalline powder
Purity %	98 Min
Loss on drying %	0.50 Max
Sulphate (SO42-) %	0.05 Max
Chloride (Cl) %	0.07 Max
Heavy metals (Pb) ppm	10 Max
Reduzate (D-glucose) %	0.7 Max
PH (10% water solution)	6.2~7.5
Arsenic salt(As) ppm	2max
Packing & Loading	25 kg/PP bag, 26tons in 20’FCL without pallets; 1000kg/Jumbo bag on pallet, 20MT in 20’FCL; 1150kg/Jumbo bag on pallet, 23MT in 20’FCL;

Application of Kingsun Sodium Gluconate 98% min

1. Construction Industry. Kingsun sodium gluconate 98% can be used as concrete setting retarder to improve the workability and the strength of concrete. When adding a certain amount of sodium gluconate powder to cement, it can make the concrete strong and random. And it will delay the initial setting and final setting time of concrete without affecting the strength of concrete. As a retarder, it can help reduce the speed at which concrete cures. And the function of sodium gluconate retarder is to affect the hydration process by reducing the hydration rate of cement. This gives the concrete more time to mix and place.
2. Textile Industry. Sodium gluconate can be used for cleaning and degreasing of fibers. Also improving the bleaching effect of the bleaching powder, the color uniformity of the dye, and the dyeing and hardening degree of the material in textile industry.
3. Oil well irrigation. During the oil well irrigation process, due to the high mud temperature and difficulty in operation, after adding sodium gluconate, the concrete can work at 170°C for several hours, meeting the construction needs in special environments. petroleum products and oil field drilling muds.
4. Cleaning Agent. In cleaning industry, it can effectively bind and remove mineral salts and metals from surfaces, making them easier to clean. Also used as a corrosion inhibitor in industrial cleaning solutions. Additionally, due to its ability to break the calcium bonds that carry dirt, so sodium gluconate powder can be used as a detergent in laundry detergents.
5. Steel Surface Cleaner. In order to suit special applications, the surface of the steel must be strictly cleaned. Due to its excellent cleaning effect, sodium gluconate is suitable for making steel surface cleaners.
6. Water treatment. Commonly used in cooling water systems, boilers, and reverse osmosis membranes. And it helps to maintain the efficiency of water treatment systems by inhibiting the formation of scale and reducing the risk of corrosion in pipes and equipment. In addition, sodium gluconate can be used as a water conditioner, helping to remove unwanted impurities and increase the effectiveness of other water treatment chemicals.
7. Food industry. Sodium gluconate can also be used as a food additive, preservative, thickener and stabilizer, chelating agent and buffer in the food industry.

Significant Advantages of Sodium Gluconate for Concrete

Kingsun sodium gluconate has many advantages in the construction industry, including slow setting, water reduction, enhanced concrete performance, scale prevention, and environmental safety. This makes it an important additive in the construction industry, widely used in concrete, cement products and other fields, and has contributed to the sustainable development of the construction industry.

• Slow setting and water reduction. As a high-efficiency retarder and water reducer for concrete, sodium gluconate 98% can significantly reduce water consumption, improve the fluidity of concrete, and extend the initial and final setting time of concrete. This not only improves the plasticity and workability of concrete, but also reduces slump damage, making concrete easier to construct and pour.
• Enhance concrete performance. Industrial grade sodium gluconate chelates with calcium ions in cement to form stable chelates, thereby enhancing the structural strength of concrete. In addition, it can improve the microstructure of concrete, reduce porosity, and improve the density and durability of concrete. This allows concrete to maintain excellent performance during long-term use and reduce the occurrence of problems such as cracking and spalling.
• Scale prevention. During the construction process, scale formation is a common problem that affects the performance of concrete. The sodium gluconate powder has excellent scale inhibition ability and can effectively prevent scale from being generated during the hardening process of cement. This can not only improve the strength and durability of concrete, but also extend the service life of the building.
• Environmental protection and safety. As an environmentally friendly additive, sodium gluconate is non-toxic and harmless and environmentally friendly. At the same time, its use also meets the safety and health requirements of the construction industry and will not cause harm to construction workers.
• Reduce production costs. Adding sodium gluconate in concrete helps reduce the production cost of concrete by reducing the water-cement ratio and reducing the amount of cement used. At the same time, because sodium gluconate 98% can extend the working time of concrete, it reduces the waste and losses caused by the concrete setting too quickly.

Performance Characteristics

• Solubility. The sodium gluconate powder is very soluble in water, which allows it to dissolve quickly and function in various aqueous systems. It dissolves quickly and to a high degree in water; however, it is slightly soluble in alcohol and insoluble in ether.
• Melting point. Its melting point is 206-209℃, with high thermal stability, and can maintain a stable physical state within a certain temperature range.
• Chelating property. This product has a strong complexing ability for metal ions such as calcium, magnesium, and iron, and can form stable water-soluble complexes with these metal ions. For example, in water treatment, it can effectively prevent the formation of scale and protect equipment from being blocked by scale; in the electroplating industry, it can help metal ions better adhere to the surface of the plated object and improve the electroplating effect.
• Corrosion inhibition. 98% Sodium gluconate can react with metal ions to form a stable complex, thereby forming a protective film on the metal surface, which plays a role in corrosion inhibition and prevents metal pipes and equipment from being corroded.
• Degradability. Sodium gluconate and its chelates with heavy metal ions in water can be rapidly and completely degraded by ordinary biochemical treatment. And the heavy metal ions released during the degradation process can be removed by precipitation or adsorbed on the sludge formed during the wastewater treatment process, which is environmentally friendly.
• Stability. When used and stored according to specifications, sodium gluconate will not decompose and has good chemical stability. However, care should be taken to avoid contact with oxides during storage.

Production Methods

Although there are many production processes for sodium gluconate, biological fermentation and dual enzyme method are the main methods for industrial production in China. The biological fermentation method has the advantages of low cost and stable production, but the production cycle is long and the equipment investment is large.

The dual enzyme method has the advantages of simple process, short production cycle and low equipment investment, which is suitable for the production of high-purity sodium gluconate. Therefore, when choosing a production process, it is necessary to comprehensively consider factors such as product use, production scale, and production cost.

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