SODIUM SULPHATE

Sodium Sulphate is a widely available inorganic salt used in detergents, glassmaking, paper, textiles, and as a laboratory drying agent.
Sodium Sulphate is valued for its stability, high solubility in water, and versatility across food, pharmaceutical, and industrial sectors.
Sodium Sulphate occurs naturally as mirabilite (decahydrate) and thenardite (anhydrous) and is also produced synthetically.

CAS Number: 7757-82-6 (anhydrous), 7727-73-3 (decahydrate)
EC Number: 231-820-9
Molecular Formula: Na₂SO₄
Molecular Weight: 142.04 g/mol

Synonyms: Sodium Sulphate, Disodium Sulphate, Sulfuric Acid Disodium Salt, Glauber’s Salt (decahydrate), Thenardite, Anhydrous Sodium Sulphate, Sodium Sulphate Powder, Na₂SO₄, Sodium Sulphate, Na₂SO₄, Glauber’s Salt, Mirabilite, Thenardite, Disodium Sulphate, Sulphuric Acid Disodium Salt, Sodium Sulphate Anhydrous, Sodium Sulphate Decahydrate, Sodium Sulphate Hydrated, Sodium Sulphate Crystals, Sodium Sulphate Powder, Sodium Sulphate Granular, Sodium Sulphate Solid, Sodium Sulphate Solution, Industrial Sodium Sulphate, Pharmaceutical Sodium Sulphate, Analytical Grade Sodium Sulphate, Sodium Sulphate Reagent, Sodium Sulphate ACS Grade, Sodium Sulphate Lab Grade, Sodium Sulphate Technical Grade, Sodium Sulphate Pure, Sodium Sulphate High Purity, Sodium Sulphate Standard, Sodium Sulphate Stabilized, Sodium Sulphate Extra Pure, Sodium Sulphate Fine Chemical, Sodium Sulphate Chemical Reagent, Sodium Sulphate Research Grade, Sodium Sulphate AR Grade, Sodium Sulphate CP Grade, Sodium Sulphate USP, Sodium Sulphate BP, Sodium Sulphate EP, Sodium Sulphate FCC, Sodium Sulphate Food Grade, Sodium Sulphate Laboratory Reagent, Sodium Sulphate Synthetic, Sodium Sulphate Manufactured, Sodium Sulphate Compound, Sodium Sulphate Salt, Sodium Sulphate Additive, Sodium Sulphate Formulation, Sodium Sulphate Mixture, Sodium Sulphate Material, Sodium Sulphate Sample, Sodium Sulphate Raw Material, Sodium Sulphate Chemical Salt, Sodium Sulphate Analytical Standard, Sodium Sulphate Solution Reagent, Sodium Sulphate Laboratory Standard, Sodium Sulphate Certified Reagent, Sodium Sulphate Assay, Sodium Sulphate Chemical Grade

APPLICATIONS

Sodium Sulphate is used in detergents as a filler to improve consistency.
Sodium Sulphate reduces clumping and dusting in washing powders.
Sodium Sulphate improves flow properties of powdered formulations.

Sodium Sulphate is employed in the glass industry.
Sodium Sulphate acts as a fining agent, removing small bubbles.
Sodium Sulphate lowers the melting point of silica mixtures.

Sodium Sulphate is used in textiles.
Sodium Sulphate promotes uniform dyeing of fabrics.
Sodium Sulphate improves color penetration in cotton and wool.

Sodium Sulphate is applied in paper and pulp production.
Sodium Sulphate is a key component in kraft pulping.
Sodium Sulphate contributes to recovery cycles in paper mills.

Sodium Sulphate is used in pharmaceuticals.
Sodium Sulphate acts as an inert filler in tablets.
Sodium Sulphate is included in some laxative formulations.

Sodium Sulphate is used in the chemical industry.
Sodium Sulphate is a raw material for sodium silicate and sodium sulfide.
Sodium Sulphate is employed in synthetic detergent production.

Sodium Sulphate is applied in construction.
Sodium Sulphate is added to cements and concretes.
Sodium Sulphate improves the performance of admixtures.

Sodium Sulphate is used as a laboratory reagent.
Sodium Sulphate is a common drying agent for organic solvents.
Sodium Sulphate removes residual water from chemical preparations.

Sodium Sulphate is included in food processing as a permitted additive.
Sodium Sulphate functions as a processing aid and stabilizer.
Sodium Sulphate is used in starch modification and clarifying processes.

Sodium Sulphate is applied in thermal energy storage.
Sodium Sulphate decahydrate serves as a phase-change material.
Sodium Sulphate supports solar energy storage technologies.

DESCRIPTION

Sodium Sulphate is a white, odorless, crystalline solid or powder with a saline taste.
Sodium Sulphate is stable and non-flammable under normal conditions.
Sodium Sulphate is highly soluble in water but insoluble in ethanol.

Sodium Sulphate decahydrate (Glauber’s Salt) is hygroscopic and widely available in nature.
Sodium Sulphate anhydrous (Thenardite) is obtained from dehydration or synthetic production.
Sodium Sulphate is considered environmentally safe in moderate amounts.

Sodium Sulphate is produced as a by-product in chemical processes (e.g., hydrochloric acid manufacture).
Sodium Sulphate has high thermal stability and decomposes at very high temperatures.
Sodium Sulphate is widely traded as an inexpensive bulk chemical.
Sodium Sulphate is an essential raw material across detergent, glass, and textile industries.

PROPERTIES

Chemical Formula: Na₂SO₄
Molecular Weight: 142.04 g/mol
Common Name: Sodium Sulphate
Appearance: White crystalline solid or powder
Odor: Odorless
Density: 2.66 g/cm³ (anhydrous)
Melting Point: 884°C (anhydrous)
Boiling Point: Decomposes before boiling
Solubility: 28.1 g/100 mL water at 25°C; insoluble in alcohol
pH (1% solution): 6–7.5
Reactivity: Stable; reacts with strong acids to form sulfuric acid and sodium salts
Chemical Stability: Stable under normal storage conditions
Storage Temperature: Store in cool, dry, ventilated conditions

FIRST AID

Inhalation:
Move the person to fresh air if dust is inhaled.
Seek medical attention if irritation occurs.

Skin Contact:
Wash with soap and water.
Seek medical advice if redness or irritation persists.

Eye Contact:
Flush cautiously with water for at least 15 minutes.
Seek medical attention if irritation continues.

Ingestion:
Rinse mouth with water.
Seek medical advice if large amounts are swallowed.

Note to Physicians:
Treat symptomatically.

HANDLING AND STORAGE

Handling:
Wear protective gloves, goggles, and clothing.
Avoid inhalation of dust.
Wash hands after handling.

Storage:
Store in tightly closed containers in a cool, dry, ventilated place.
Protect from moisture to avoid caking.
Keep away from strong acids.

Spill and Leak Procedures:
Avoid dispersing dust.
Sweep or vacuum carefully with dust control.
Dispose of according to local regulations.