Sodium Sulfate

Basic Information

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CAS Number

7757-82-6

Molecular Formula

Na2O4S

Molecular Weight

142.04 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

884 °C

Boiling Point

1700ºC

Density

2.68 g/mL at 25 °C

Water Solubility

18.5MG/L

Solubility

H2O: 1 M at 20 °C, clear, colorless

Refractive Index

1.484

SMILES

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[O-]S(=O)(=O)[O-].[Na+].[Na+]

InChI

InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChIKey

PMZURENOXWZQFD-UHFFFAOYSA-L

LogP

-0.25720

Complexity

62.2

Safety Information

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Stability

Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic.

Sensitiveness

Hygroscopic

Synonyms & References

English

Sodium sulfate
DETERGENT SALT CAKE
GLAUBER'S SALT
KJELDAHL CATALYST TABLETS SODIUM SULFATE
NATRII SULFAS
SALT CAKE
SODIUM SULPHATE
SULFATE STANDARD SOLUTION
Anhydrous sodium sulfate
Bisodium sulfate
Crimidesa
Crude sodium sulfate
dibasicsodiumsulfate
Disodium monosulfate
Disodium sulfate
Disodium sulphate
Sodium sulfate anhydrous
Sodium sulfate monoclinic
Sodiumsulfate-anhydrous
Sodium Sulphate Anhydrous
anhydrous sodium carbonate
anhydrous sodium formate
anhydrous sodium sulphate
sodium carbonate powder
sodium carbonate solution
sodium formaite
sodium formate powder
sodium formiate
SODIUM SULFATE ANHYDROUS PESTANAL
Sodium sulfate anhyfrous
solid sodium carbonate

MDL Number

MFCD00003504

FAQ

What is Sodium Sulfate (CAS: 7757-82-6)?

Sodium sulfate (CAS: 7757-82-6) is an inorganic compound with the chemical formula Na₂SO₄. It appears as a white, crystalline solid and is highly soluble in water. Commonly used as a desiccant, it also serves as a key component in glass manufacturing, detergents, and chemical synthesis. Sodium sulfate is non-toxic in low concentrations but can cause irritation if ingested or inhaled. Its hygroscopic nature makes it useful in drying applications, while its stability under normal conditions ensures broad utility across industries.

What are the main uses of Sodium Sulfate (CAS: 7757-82-6)?

Sodium sulfate (CAS: 7757-82-6) is widely used in the pharmaceutical industry as a drying agent and excipient. Industrially, it acts as a coagulant in paper production and a raw material for detergents. In food, it functions as a leavening agent and stabilizer. It’s also employed in textile manufacturing, as a buffer in research, and in the production of sodium silicate. Its versatility stems from its chemical properties, making it essential in multiple sectors.

Is Sodium Sulfate (CAS: 7757-82-6) safe?

Sodium sulfate (CAS: 7757-82-6) is generally safe when handled properly. It is non-toxic in low doses and approved as a food additive by regulatory agencies. However, high concentrations may cause skin or eye irritation. OSHA guidelines recommend using gloves and goggles for protection during handling. Proper ventilation is advised to avoid inhalation risks. Always follow safety protocols to ensure safe use in industrial and laboratory settings.

How should Sodium Sulfate (CAS: 7757-82-6) be stored?

Sodium sulfate (CAS: 7757-82-6) should be stored in a cool, dry place (15-25°C) with low humidity (<60%). Keep it in airtight containers to prevent moisture absorption, which can cause clumping. Avoid light exposure to maintain stability. Ensure proper ventilation to minimize dust accumulation. Storage conditions are critical to preserving its chemical integrity and preventing degradation over time.