Sodium gluconate, which is also known as Sodium Salt of Gluconic Acid, occurs from fermenting glucose. The appearance is a light yellow or white crystal powder. It is highly soluble when placed in water, yet it is insoluble when placed in alcohol. It also has a saline taste, and it is readily biodegradable, non-corrosive, and non-toxic. As one of the essential chemical admixtures, sodium gluconate is used as a water-quality stabilizer, acid-base equilibrium, a retarder, cement-blending agent, and surface-cleaning agent and is used widely in many other fields, including oil drilling, the textile and cleaning industry, and concrete.

The Main Uses Of Sodium Gluconate

• Retarder Agent For Concrete

Sodium gluconate is used to improve the strength and workability of concrete and is also used as a retarder for concrete across many of the construction sectors. Adding specific amounts of this additive to cement prolongs the curing and starting time of concrete or cement, which means it delays the final and initial setting time of the concrete without impacting the strength. Sodium Gluconate can also prolong the “working time” of cement or concrete. It is usually used in combination with some concrete water reducer.

• Steel Surface Cleaning Agent

When it comes to specialized applications where the steel surface has to be cleaned stringently to ensure the cladding materials bond tightly to the surface of the steel sodium gluconate can be used as an effective cleaning agent for cleaning the steel’s surface due to its effective cleaning effect.

• Water-Quality Stabilizer

Sodium Gluconate is also used widely as one of the water stabilizers in low-pressure boilers, and cooling-water systems, among other fields. Of course, phosphates products(such as shmp chemical, stpp) are still one of the commonly used descaling agents for boiler water treatment. In comparison to general corrosion inhibitors, as the temperature increases so do its corrosion-inhibition abilities.

• Textile Industry

Sodium Gluconate is also commonly used for degreasing and fiber cleaning. It can improve the bleaching effects relating to certain bleaching powders and the uniformity of color in dyes and improve the dyeing hardening degree of raw materials in the textile industry.

• Glass Bottle Cleaning Agent

Sodium Gluconate can also be used to effectively remove the rust that accumulates around the mouth of bottles and to remove the labels on the outside of bottles. It also decreases the likelihood of the washer nozzle or the pipeline plugging. It is essential that it doesn’t affect environmental safety or food.

• The Petroleum Industry

Sodium Gluconate is also a common agent used in the production processes of oil-field drilling fields along with petroleum products.

Conclusion

Sodium Gluconate is typically used alone, yet it can also be mixed with other retarders like phosphates-of-carbohydrates in use. Sodium Gluconate comes in crystalline form and is made in properly-controlled environments. This is one of the pure chemical, non-corrosive compounds, which means the quality is consistent. This is the feature that guarantees the applications of reproducible and reliable results.

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Concrete that is flowing is highly-fluid yet the concrete is workable and can usually be placed or poured with no or very little compaction or vibration. The effects of products such as sodium naphthalene sulfonate superplasticizer will only last for between thirty to sixty minutes which typically depends on the dosage rate along with the brand, which results in rapid workability loss. Since loss in slump occurs relatively quickly, naphthalene sulfonate superplasticizer is typically added to the concrete at a job site.

The main aim of adding a product like naphthalene sulfonate superplasticizer to concrete will be to lower the need to add water to the mixture. When the water amount in a concrete mixture is reduced, it allows builders to achieve a much higher-density paste (cement), which will also improve or enhance the overall quality relating to the paste. SNF-A offers the highest reduction rate when compared to the 3 types of superplasticizers for concrete, which stands at an average rate of 26%.

When it comes to SNF-B and SNF-C, the water reduction rates are 25% for SNF-B and 23% for SNF-C. So it becomes clear that the type of sodium naphthalene sulfonate that offers the highest water reduction rates will be a superior quality product within the construction sector, and also an option that is more expensive.

Even though the physical characteristics of SNF-A, SNF-B, and SNF-C are exactly the same, sodium naphthalene sulfonate prices for each type will differ according to the chemical composition.

Net starch-fluidity is also an important factor when deciding on the overall quality of “sodium naphthalene sulfonate”. The starch present in SNF will influence many characteristics of concrete in a positive way such as compressive strength, creep, and heat-of-hydration. The SNF-A offers the highest net starch-fluidity which stands at 250mm.

– NA2SO4 Concentration

The curing environment “standard” in construction sectors uses different NA2SO4 concentrations. The NA2SO4 solution is what suppresses the hydration rate of a cement mixture. As the NA2SO4 concentration present in sodium naphthalenesulfonate starts to increase, the compressive strength and dynamic-elastic nature of the concrete start to decrease.

This means that premium quality naphthalene sulfonate superplasticizer is going to feature a lower NA2SO4 concentration. For instance, SNF-A currently possesses the lowest NA2SO4 concentration which is equal to or less than 5%. SNF-C, on the other hand, has a NA2SO4 concentration that is the highest, standing at 18%. While SNF-B has a NA2SO4 concentration of around 10%.

In conclusion, the naphthalene sulfonate superplasticizer is one of the valuable chemical compounds in the construction and building sector. It plays an important role in reducing water requirements while helping to strengthen concrete mixtures. However, it is recommended to conduct a bit of research when it comes to choosing the best quality naphthalene sulfonates according to the needs and requirements of the project.

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