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What is Sodium Sulfate

Sodium sulfate — also known as sodium sulphate, sulfate of soda, or CAS No. 7757-82-6 — is an inorganic compound of sodium. This sodium salt form of sulfuric acid is extensively used in a wide range of industries.

More than 6.5 million tons of sodium sulfate are produced each year around the world. Most are mined from the compound's natural mineral form called mirabilite, which is taken from lake beds as part of the water treatment process. Another one-third is produced as a byproduct of other processes in the chemical industry.

Whether you work in the paper, glass, or soaps and detergents industry, you likely use sodium sulfate nearly every day at your company. If so, Brenntag North America offers the top-quality sodium sulfate you need to keep your business running smoothly.

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Industries That Use Sodium Sulfate

As such a versatile product, sodium sulfate finds use in an incredible range of industries. Particularly, the detergents, glass-making, paper, and food industries employ the compound for several purposes:

  • Detergents: The most common uses of sodium sulfate is as an ingredient in
    detergents. About half the world's sodium sulfate is used in powdered laundry detergents
    as a filler.
  • Glass: The glass industry uses sodium sulfate as a fining agent. It can remove air
    bubbles from molten glass, prevent scum from forming on the glass' surface, and promote
    melting as needed.
  • Paper: You can also find sodium sulfate at businesses throughout the paper industry. It is
    one of the major active ingredients in the Kraft process of reducing wood to pulp, which is
    then turned into paper. However, more efficient methods have largely replaced sodium
    sulfate in the paper industry, so its use as a wood pulp manufacturing agent has
    significantly declined.
  • Food: In the food and beverage industry, you will see sodium sulfate used as a diluent for
    food coloring. It is approved by the FDA as non-toxic and safe under E-number additive
    E514.

Chemical Property Information for Sodium Sulfate

Sodium sulfate — which has a chemical formula of Na2SO4 — contains two sodium atoms, one sulfur atom, and four oxygen atoms. It is found in three forms — anhydrous, decahydrate, and heptahydrate. Each of these forms appears as a white crystalline solid. The compound has incredibly unique solubility properties. When placed in water with temperatures between 0 degrees Celsius (32 degrees Fahrenheit) to 32.384 degrees Celsius (90.2912 degrees Fahrenheit), its solubility increases more than 10 times. After this point, its solubility becomes nearly independent of its temperature.

Choose Brenntag as Your Sodium Sulfate Distributor

If you are wondering who to partner with as your sodium sulfate distributor, Brenntag North America is the industry leader you need by your side. At Brenntag, we want to make buying your chemicals and additives as easy as possible. That is why we offer an extensive inventory of 10,000 products, service from 190 distribution centers placed strategically throughout North America, and unmatched customer support to meet your needs. We invite you to learn more about us and choose Brenntag as your chemical and ingredient distributor by contacting us online.

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