Sodium aluminate (NaAlO2) is a chemical commonly used in many industries, but did you know it can cause serious effects on worker health? In this article, we will analyze the health impacts of sodium aluminate and effective prevention methods.
1. What is Sodium aluminate?
Sodium aluminate, with the chemical formula NaAlO2, is an important inorganic compound in many industrial fields. Its chemical name suggests the basic structure of this compound: sodium (Na) combined with aluminate (AlO2). Sodium aluminate often appears in the form of a white powder or crystals, and has the property of being readily soluble in water.
The chemical structure of sodium aluminate shows a combination of sodium and oxidized aluminum in a bonded network structure, creating a compound with strong alkaline properties. In industrial environments, sodium aluminate is used mainly in water treatment processes, paper production, and in the aluminum industry.
With the formula NaAlO2, sodium aluminate reacts with water to create a strong alkaline solution, capable of changing the pH of the solution. Due to this special chemical property, it plays an important role in regulating chemical reactions in industrial production processes.
Understanding sodium aluminate and its chemical structure not only helps identify the applications of this compound in industry but is also necessary to assess the associated health and environmental impacts when using it.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Natri aluminat | Sodium aluminate | 28419000 | 1302-42-7 | NaAlO2 |
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2. What are the sources of Sodium aluminate in the production process?
This inorganic compound often arises in many industrial production processes, especially in the aluminum processing and production industry. One of the main sources of sodium aluminate is during the production of aluminum from bauxite ore. In the Bayer process, bauxite ore is treated with a sodium hydroxide (NaOH) alkali solution to extract alumina (aluminum oxide). Sodium aluminate is created as a by-product during this stage.
In the paper industry, sodium aluminate is used to treat water and clean raw materials. During this process, sodium aluminate can arise from wastewater treatment steps or from the direct use of the chemical in the production process.
Additionally, sodium aluminate can also appear in industrial wastewater treatment processes, where it is used as a coagulant to remove impurities and suspended particles in the water. In water treatment plants, sodium aluminate is added to wastewater to improve the efficiency of the sedimentation process, cleaning the water before it is discharged into the environment.

3. Industries that use Sodium aluminate in production
Sodium aluminate is widely used in many different industries due to its chemical properties and diverse applications. One of the key industries is the aluminum production industry. In the Bayer process for producing alumina from bauxite ore, sodium aluminate plays an important role as a component in the alkali solution, helping to extract aluminum oxide from the bauxite ore. This process creates sodium aluminate as a by-product that needs to be managed properly.
The paper industry also uses sodium aluminate in water treatment processes. Sodium aluminate is added to wastewater during paper production to improve sedimentation and clean the water before it is discharged into the environment. Additionally, sodium aluminate is also used to adjust pH in paper processing, helping to enhance the quality of the final product.
Another important application of sodium aluminate is in the water treatment industry. It is used as a coagulant in wastewater treatment systems to remove suspended particles and impurities. Sodium aluminate helps improve the efficiency of sedimentation processes in water treatment plants, ensuring wastewater meets standards before being discharged into the environment.
Besides, sodium aluminate is also applied in the construction industry, especially in concrete products. In some special concrete formulas, sodium aluminate can be used to improve the properties of concrete such as durability and water resistance.
4. How does Sodium aluminate affect workers?
The compound Sodium aluminate is widely used in many industries thanks to its unique chemical properties. One of the industries that uses sodium aluminate the most is the aluminum production industry. In the process of processing bauxite ore to produce aluminum, sodium aluminate plays an essential role in the Bayer process. This chemical is used to dissolve bauxite, extract alumina (aluminum oxide), and is often created as a by-product.
The paper industry is also another important field that uses sodium aluminate. During paper production, sodium aluminate is used to treat wastewater and adjust the pH of the solution. It helps improve sedimentation efficiency and remove impurities from wastewater before discharging it into the environment, while also contributing to enhancing the quality of the paper product.
In addition to the aluminum and paper industries, sodium aluminate is also applied in the water treatment industry. In wastewater treatment plants, sodium aluminate is used as a coagulant to improve the sedimentation process and remove suspended particles. This helps ensure wastewater meets standards before being discharged into the environment.
The construction industry also utilizes sodium aluminate in some special concrete products. In concrete formulas, sodium aluminate can be added to improve the durability and water resistance of concrete, enhancing the quality and longevity of construction projects.
5. Permissible safe concentration of Sodium aluminate for human exposure
The safe concentration of sodium aluminate for human exposure is an important factor in ensuring health and safety in the workplace. Sodium aluminate, despite its many industrial applications, can be hazardous if exposure is at high levels. To manage risks and protect worker health, regulatory agencies have specified maximum permissible concentration levels in the workplace air and in the surrounding environment.
According to international occupational safety standards, the concentration of sodium aluminate in the workplace air should generally not exceed 1 mg/m³ for an 8-hour workday. This concentration level is specified to minimize the risk of skin, eye, and respiratory irritation. If the concentration exceeds the specified level, control measures such as improving the ventilation system, using personal protective equipment, and implementing effective hygiene measures are necessary.
In addition to controlling air concentrations, attention must also be paid to regulations on sodium aluminate concentrations in drinking water and food. Food safety standards stipulate that the concentration of sodium aluminate in drinking water must not exceed the permissible level to ensure public health. This means that strict control measures must be implemented during water treatment and quality checks to ensure there is no residue of this chemical in the water supply and food.
Workers should also be fully trained on the risks associated with sodium aluminate and preventive measures. Personal protective measures such as wearing gloves, safety goggles, and respirators should be used when in contact with this chemical. At the same time, safe work procedures and workplace hygiene must also be maintained to ensure no contamination or unwanted exposure to sodium aluminate occurs.

At a basic level, if working in an industrial environment, adhering to safety standards and limiting exposure to Sodium aluminate is important. Organizations like the Occupational Safety and Health Administration (OSHA) in the United States provide guidelines and safety principles to protect workers from the negative impacts of chemicals.
6. Measures to mitigate the effects of Sodium aluminate on workers’ health
To mitigate the effects of sodium aluminate on workers’ health, it is necessary to implement several preventive and control measures strictly in the workplace. Sodium aluminate, despite its many industrial applications, can be dangerous if exposure is at high levels. Therefore, applying protective measures is very important to ensure the health and safety of workers.
First of all, controlling the concentration of sodium aluminate in the workplace air is one of the most important steps. It is necessary to establish an effective ventilation system to minimize the concentration of this chemical in the air. Good ventilation helps remove sodium aluminate vapors and dust, ensuring that the air concentration is always at a safe level according to regulations. At the same time, the regular use of chemical concentration measuring devices will help monitor and adjust the concentration if necessary.
Besides controlling the air, personal protective measures are necessary. Workers should wear protective equipment such as respirators, safety goggles, and gloves when working with sodium aluminate. This protective equipment helps reduce direct contact with the chemical, thereby reducing the risk of skin, eye, and respiratory irritation.
In addition, providing adequate training for workers on how to handle and use sodium aluminate is also an important factor. Training helps workers understand the risks associated with the chemical, how to use protective equipment, and safe work procedures. This not only helps protect personal health but also enhances safety awareness throughout the work environment.
Management and disposal of waste containing sodium aluminate also need to be carried out carefully. This chemical needs to be stored and processed according to regulations to avoid environmental pollution and protect public health. Measures such as proper waste collection and disposal will help minimize the risks associated with sodium aluminate.
Furthermore, implementing regular workplace hygiene measures is necessary to remove dust and sodium aluminate residues. Work areas need to be kept clean to ensure there is no hazardous accumulation of chemicals.
Occupational safety training: Workers need to be trained and educated about the risks and safety measures when working with this chemical. This training should be provided periodically and regularly to ensure understanding and proper adherence to safety rules.
Periodically organize workplace environment monitoring in factories and enterprises, collect and analyze harmful factors for workers, thereby adjusting to reduce hazard levels to prevent occupational diseases for them.
7. National Workplace Environment Monitoring Center
Workplace environment monitoring center of Nam Viet is a professional unit for monitoring and measuring the quality of the working environment across all provinces in Vietnam. With a team of monitoring specialists with rich experience, the center uses modern measuring equipment, ensuring accuracy and reliability.
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8. Workplace Environment Monitoring Quotation
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