Sodium sulfate

White odorless compound used industrially worldwide.

Sodium sulfate is a white, odorless, and highly soluble compound with the chemical formula Na2SO4. It is widely used in industries such as detergents, paper, and glass manufacturing. It also has applications in medicine and as a food additive.

Energy Sector

Sodium sulfate has several uses in the energy industry. It is commonly used as a thermal storage medium in concentrated solar power plants, where it can store heat for several hours, allowing for continuous power generation even after sunset. It is also used as a desiccant in natural gas production to remove water vapor and prevent the formation of hydrates that can damage pipelines. Sodium sulfate is also used as a catalyst in the production of biodiesel, where it helps to separate the glycerin from the fatty acid methyl esters. Finally, sodium sulfate is used as a corrosion inhibitor in geothermal power plants to protect metal pipes from corrosion caused by the hot, mineral-rich water used in the process.

Pulp & Paper

Sodium sulfate is commonly used in the paper industry as a filler and a sizing agent. As a filler, it adds bulk and weight to the paper while reducing its cost. As a sizing agent, it helps to increase the paper’s resistance to water and moisture, allowing for better printing and writing results. It also helps to reduce the penetration of ink into the paper, resulting in sharper images and text. Additionally, sodium sulfate is used as a pulping agent to break down wood chips and other raw materials during the paper-making process.

Food Additives

Sodium sulfate has several uses in the food industry, primarily as a thickener, a firming agent, and a flavor enhancer. It is used in the production of canned and processed foods to improve their texture and prevent them from spoiling. It is also used as a whipping aid in the production of certain dairy products, such as whipped cream and ice cream. Additionally, sodium sulfate can be used as a flavor enhancer in snack foods, baked goods, and processed meats, where it helps to enhance the taste and aroma of the products. However, its use in the food industry is strictly regulated, and its safety and potential health effects are carefully monitored.

CAS No.: 7757-82-6


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