What are the chemical properties of 85% sodium aluminate content?

As a supplier of 85% sodium aluminate content, I am often asked about the chemical properties of this compound. Sodium aluminate is a chemical compound with the formula NaAlO₂, and it is commonly used in various industrial applications due to its unique chemical characteristics. In this blog post, I will delve into the chemical properties of 85% sodium aluminate content and explore its significance in different industries.

Basic Chemical Structure and Composition

Sodium aluminate is an inorganic compound that consists of sodium cations (Na⁺) and aluminate anions (AlO₂⁻). The 85% sodium aluminate content indicates that 85% of the substance is pure sodium aluminate, while the remaining 15% may include impurities or other additives depending on the manufacturing process. The chemical formula NaAlO₂ represents a 1:1 ratio of sodium to aluminum atoms, with oxygen atoms bonding to the aluminum to form the aluminate anion.

Solubility and Hydrolysis

One of the most important chemical properties of sodium aluminate is its solubility in water. Sodium aluminate is highly soluble in water, and when it dissolves, it undergoes hydrolysis. Hydrolysis is a chemical reaction in which a compound reacts with water to form new substances. In the case of sodium aluminate, it reacts with water to produce sodium hydroxide (NaOH) and aluminum hydroxide (Al(OH)₃) according to the following equation:

NaAlO₂ + 2H₂O → NaOH + Al(OH)₃

This hydrolysis reaction is exothermic, meaning it releases heat. The resulting solution is alkaline due to the presence of sodium hydroxide. The solubility of sodium aluminate in water makes it a useful compound in water treatment processes, where it can be used to adjust the pH of water and to precipitate impurities.

Reactivity with Acids

Sodium aluminate is a basic compound, and it reacts readily with acids. When sodium aluminate reacts with an acid, it forms a salt and water. For example, when it reacts with hydrochloric acid (HCl), the following reaction occurs:

NaAlO₂ + 4HCl → NaCl + AlCl₃ + 2H₂O

This reaction is a neutralization reaction, where the basic sodium aluminate reacts with the acidic hydrochloric acid to form a salt (sodium chloride and aluminum chloride) and water. The reactivity of sodium aluminate with acids makes it useful in various industrial processes, such as in the production of aluminum salts and in the treatment of acidic wastewaters.

Stability and Decomposition

Sodium aluminate is a relatively stable compound under normal conditions. However, it can decompose when heated to high temperatures. When heated, sodium aluminate decomposes to form sodium oxide (Na₂O) and aluminum oxide (Al₂O₃) according to the following equation:

2NaAlO₂ → Na₂O + Al₂O₃

This decomposition reaction occurs at temperatures above 1000°C. The stability of sodium aluminate at lower temperatures makes it suitable for use in applications where it needs to withstand normal operating conditions without significant decomposition.

Use in Water Treatment

One of the major applications of 85% sodium aluminate content is in water treatment. As mentioned earlier, when sodium aluminate dissolves in water, it produces sodium hydroxide and aluminum hydroxide. The aluminum hydroxide forms a gelatinous precipitate that can adsorb and remove impurities from water, such as suspended solids, heavy metals, and organic matter. The sodium hydroxide produced also helps to adjust the pH of the water, making it more alkaline and less corrosive.

In addition to its use in water treatment, sodium aluminate is also used in the paper industry, where it can be used as a sizing agent to improve the strength and water resistance of paper. It is also used in the construction industry, where it can be added to cement to accelerate the setting time and improve the strength of concrete.

Comparison with Other Sodium Aluminate Contents

There are different grades of sodium aluminate available in the market, such as 56% Sodium Aluminate Content. The 85% sodium aluminate content has a higher purity compared to the 56% grade, which means it has a more concentrated form of the active ingredient. This higher purity can result in more efficient performance in applications such as water treatment, where a higher concentration of the compound can lead to better removal of impurities.

However, the choice of sodium aluminate content depends on the specific requirements of the application. In some cases, the 56% grade may be sufficient and more cost - effective, while in other applications where a higher level of performance is required, the 85% grade may be preferred.

Availability of Solid Sodium Aluminate

We also offer Solid Sodium Aluminate with 85% content. Solid sodium aluminate has the advantage of being easier to store and transport compared to liquid forms. It can be easily dissolved in water when needed for use in various applications. The solid form also has a longer shelf - life, making it a convenient option for many industries.

Contact for Purchase and Collaboration

If you are interested in purchasing 85% Sodium Aluminate Content for your industrial applications, we are here to provide you with high - quality products and excellent customer service. Our team of experts can assist you in determining the most suitable grade of sodium aluminate for your specific needs and can provide you with technical support. Whether you are in the water treatment, paper, or construction industry, we can offer solutions that meet your requirements. Feel free to reach out to us to start a discussion about your procurement needs and explore potential collaborations.

References

• Cotton, F. A.; Wilkinson, G.; Murillo, C. A.; Bochmann, M. (1999). Advanced Inorganic Chemistry (6th ed.). Wiley.
• Housecroft, C. E.; Sharpe, A. G. (2004). Inorganic Chemistry (2nd ed.). Pearson Prentice Hall.
• Umland, J. B.; Bellama, J. M. (2003). General Chemistry (5th ed.). Brooks/Cole.