Category: Chemical Additives for Concrete

Why Should You Use Naphthalene Sulfonate for Concrete

Naphthalene sulfonate is a byproduct of the reaction between naphthalene and sulfuric acid. It is a white, crystalline solid that is insoluble in water. The compound is used as a component of hydraulic fracturing fluid, drilling muds, concrete, and cement slurry. Many people also use it as a detergent, wetting agent, emulsifier, and dispersant. Let’s take a closer look at why naphthalene sulfonate for concrete is so essential and why the construction industry is ordering this compound in bulk.

What does naphthalene sulfonate do for concrete?

Sodium naphthalene is a concrete admixture that increases the strength and longevity of concrete. It is added to the concrete mix in small amounts, typically 2-3%, and works by improving the binding between the cement and aggregate particles. It has a significantly high water-reduction rate. SNF powder for concrete can reduce the water consumption of the final mix by 25%. It also acts as a superplasticizer, meaning it can reduce segregation and water penetration and increase concrete fluidity. As a result, concrete that contains polynaphthalene sulfonate is less likely to crack or crumble over time.

In addition, naphthalene sulfonate for concrete can protect concrete structures from freeze-thaw damage, making it an ideal choice for areas that experience harsh winters. While the compound does add to the cost of concrete, its benefits make it well worth the investment for many construction projects.

Using naphthalene sulfonate for concrete

Concrete is a versatile building material that is used in a variety of applications, from foundations to sidewalks to floors. While it is strong and durable, concrete can be susceptible to cracking and other forms of damage after a few years. For this reason, many construction companies are choosing to add naphthalene sulfonate to concrete mix, and hence this compound is in high demand in recent years.

Naphthalene sulfonate increases the strength and durability of concrete. It does this by improving the bond between the cement and the aggregate. As a result, concrete that contains naphthalene sulfonate doesn’t usually crack or break down over time. Most importantly, it can protect concrete against weathering and environmental damage. Make sure that you use up to 3% of naphthalene sulfonate and not more in your concrete mix.

Benefits of naphthalene sulfonate for concrete

As already mentioned, this compound prevents the formation of cracks in your concrete structure. This would make the structure less likely to break over time. Moreover, compared with sodium lignosulfonate water reducer, SNF superplasticizer makes concrete more water-resistant. This is especially beneficial in areas that experience heavy rains or flooding. By preventing water from seeping into the concrete, NSF helps to prolong the life of the structure. This makes concrete treated with PNS powder an ideal choice for a variety of applications in the construction industry.

Here are a few more benefits of this compound:

● Strengthening – SNF is a key ingredient in concrete that helps to make it strong and long-lasting. The molecules of this compound bind together with the calcium ions in the concrete, forming a strong bond that holds the concrete together. It also prevents the growth of algae and other organisms that can weaken the concrete.

● Water-reduction rate – The water-reduction capability of naphthalene sulfonate reduces the water content of concrete without affecting its strength or durability. This can be a significant advantage when working with large projects, as it can save time and money. Naphthalene sulfonate is also relatively inexpensive, making it an attractive option for many builders.

Naphthalene sulfonate( has now become a common additive to concrete that is purported to improve the curing process and reduce cracking. Using sulfonated naphthalene for concrete as an admixture will lead to increased compressive and flexural strength, improved abrasion resistance, and reduced permeability.

Factors that Contribute to Sodium Lignosulfonate Price

Sodium lignosulfonate is widely used as a de-foaming agent and water reducer. It is also used as a pumping aid agent, mineral binder, road deduster, air-entraining agent, retarder, and early strength agent. The construction, petroleum, metallurgical, textile, and chemical industries all consider it as a key ingredient because of its water-reducing ability.

How much does sodium lignosulfonate cost?

High-quality sodium lignosulfonate usually costs from $0.17 to $0.35 per kilogram. The sodium lignosulfonate price varies depending on its purity, water reducing rate, pH, and appearance.

Moreover, the overall sodium lignosulfonate price may also come down if you buy in bulk. Most concrete admixture suppliers prefer selling the item in bulk so that they don’t have to pay significantly for shipping charges. Talk to the supplier regarding the price ranges of the product according to its quantity. Next, assess the average quantity of sodium lignosulfonate that you usually need for your projects. If you think you can store the product in your warehouse, it’s better to buy it in bulk to save more money.

Kingsun sodium lignosulfonate price

Contributing factors to sodium lignosulfonate price

  1. Purity

You may come across different qualities of sodium lignosulfonate in the market. Some of them have 30 to 45% purity while others have at least 50 to 60% purity. It is always best to buy the one that has 50 to 60% purity even though it costs more. If the product has at least 60% sodium lignosulfonate, it would reduce concrete quicker than the one that has 30 to 45% purity.

  1. Water-reducing rate

As one of the most popular water reducing admixtures, sodium lignosulfonate can reduce water and make it easier for concrete to bind other ingredients. The ideal water-reducing rate of sodium lignosulfonate is 8 to 9%. You may find high-quality sodium lignosulfonate that has a higher water-reducing rate, but make sure you don’t buy one that has less than 8%. The higher the water reducing rate, the quicker it helps concrete mix all the other ingredients.

  1. PH

PH is another contributor to the final sodium lignosulfonate price. Many people only focus on the water reducing rate if they want to use sodium lignosulfonate for construction purposes. Honestly, its pH is equally important. Sodium lignosulfonate with a low pH will have an impact on its colour. You will notice that high-quality sodium lignosulfonate is yellow-brown in colour while inferior quality sodium lignosulfonate looks more brownish. Testing the two samples will show you that the former has at least a 7 to 12 pH value while the latter has a much lesser pH value.

  1. Appearance

As already mentioned, high-quality sodium lignosulfonate is always yellow-brown. You can figure out the sodium lignosulfonate price from its colour. Wholesalers will usually ask for a higher price if the sodium lignosulfonate is yellow-brown. The browner it gets, its price drops.

FAQs on sodium lignosulfonate

Q: What does sodium lignosulfonate contain?

A: Sodium lignosulfonate contains a combination of many chemicals, such as sodium ligno, ligninesulfonic acid, sodium lignin, SLS, ligno sulfonate, and sodium ligno sulfonate. If you want to buy high-quality sodium lignosulfonate, make sure you check its composition before purchasing.

Q: Does the colour change if the purity varies?

A: Yes, the colour will change if the purity of sodium lignosulfonate varies. If it contains less than 45% sodium lignosulfonate, you will notice a browner colour. On the other hand, if the purity is higher, you will see a yellowish brown colour.

Sodium Lignosulfonate Sample

The sodium lignosulfonate price often indicates the product’s quality and purity. You should assess your needs according to different construction projects before buying sodium lignosulfonate. Buying it in bulk is always cost-effective, but don’t forget to keep an eye on essential factors like pH, water reducing rate, and overall appearance.