Sodium Sulfate

Sodium Sulfate (Na2SO4) is a white, inorganic crystalline solid or powder that is highly soluble in water. It is widely used as a cheap filler in powdered laundry detergents, in the Kraft process for paper pulping, in glass manufacturing and as a drying agent in laboratories. It exists in anhydrous (thenardite) and decahydrate (Glauber's salt) forms, with massive annual production, mainly for industrial applications.

Applications of Sodium Sulfate:

Primary Industrial Applications:

• Detergent Filler: The largest use is in powdered household laundry detergents, where it acts as a filler (filler) to provide volume, improve flowability and optimize concentration.

• Paper Production (Kraft Process): It is used as a raw material in the Kraft pulping process to make wood pulp into paper, helping to break down wood fibers.

• Glass Manufacturing: Sodium Sulfate acts as a fining agent in the production of glass, removing small air bubbles and preventing scum formation in molten glass.

• Textile Dyeing: It is employed as a leveling agent to ensure even dye absorption, reducing the negative charge on fibers for uniform color.

Chemical and Lab Uses:

• Drying Agent: Anhydrous sodium sulfate is a widely used inert desiccant in organic synthesis laboratories to remove trace moisture from organic solvents.

• Chemical Production: It is used in manufacturing sodium silicate, sodium sulfide and other chemical products.

Medical and Daily Use:

• Laxative: Sodium Sulfate is known as Glauber’s salt (decahydrate form), it acts as a saline laxative to treat constipation or purge the colon before medical procedures.

• Food Additive: Sodium Sulfate acts as an acidity regulator and processing aid in specific foods.

Other Applications:

• Thermal Storage: Due to its high heat of fusion, it is used in phase-change materials for thermal energy storage systems.

• Agricultural Conditioning: Sodium Sulfate is used in soil conditioning to improve structure in specific cases.

Sodium Sulfate – Product Specifications:

• Chemical Name: Sodium Sulfate

• Other Name: Glauber’s Salt (Decahydrate)

• Chemical Formula: Na₂SO₄ / Na₂SO₄·10H₂O

• Molecular Weight: 142.04 g/mol (Anhydrous)

• CAS Number: 7757-82-6 (Anhydrous)

• HSN Code: 28331100

• Appearance: White crystalline powder or granules

• Odor: Odorless

• Solubility: Soluble in water

• pH (5% Solution): 6.0 – 8.0

• Density: Approx. 2.66 g/cm³

• Quality Specifications:

• Assay (Na₂SO₄): 99% Min

• Sodium Chloride (NaCl): 0.5% Max

• Iron (Fe): 0.002% Max

• Calcium & Magnesium (as Ca + Mg): 0.1% Max

• Moisture: 0.5% Max

• Water Insoluble Matter: 0.05% Max

• Grades Available: Industrial Grade, Detergent Grade, Textile Grade & Pharma Grade.

Packaging: 50 Kg. Bag

MOQ: 50 Kg.