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.

  • Synonyms: Disodium Sulfate, Na2SO4, Salt Cake, Sodium Sulfate, Sodium Sulphate
  • INCI: Sodium Sulfate
  • Chemical formula: Na2SO4
  • CAS #: 7757-82-6


Use the links below to view all package sizes for these specific products:

Sodium Sulfate Anhydrous
Sodium Sulfate Anhydrous FCC
Sodium Sulfate Anhydrous Natural


AppearanceWhite Solid Powder
SolubilitiesSoluble in water
Boiling pointNot available
Freezing point1630°F (887.8°C)
Molecular weight142.04 g/mol
Weight per gallon22.199 lbs/gal
ClassInorganic Salt
GradesIndustrial, Technical


Sodium sulfate uses include Bar Soap, Bath Oils, Body Wash, Car Wash Soap, Ceramics, Cosmetics, Detergents, Exfoliant Scrub, Eye Shadow, Facial Cleaner, Foundations, Glass, Hair Colorants, Hand Creams, I & I Cleaners, Kraft Paper, Liquid Hand Soap, Mascara, Nail Polish, Paper & Paperboard, Pulp & Paper, Shampoo, Shower Gels, Textile

  • Personal Care: Sodium sulfate is used in the formulation of cleansers, bath soaps and detergents, and skin care preparations
  • HI&I: 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.
  • Textile Finishing
  • Pulp and 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 and Nutrition: 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.

Quick Answers

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.

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.

Sodium sulfate is available in sack (2000 lb) and bags (50 lb) quantities

You can download a copy of the SDS for sodium sulfate from Brenntag Connect.

Download the SDS now.


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