Sodium Sulfate Anhydrous 7757-82-6

Sodium Sulfate Anhydrous

Chemical Identity:

• Chemical Name: Sodium Sulfate Anhydrous
• CAS Number: 7757-82-6
• Molecular Formula: Na₂SO₄
• Molecular Weight: 142.04 g/mol

Physical Properties:

• Appearance: White crystalline powder
• Melting Point: 884 °C (1623 °F)
• Solubility: Soluble in water (about 28 g/100 mL at 20 °C); low solubility in alcohol and acetone.
• Density: 2.664 g/cm³

Chemical Properties:

• pH: Neutral (pH ~7 in solution)
• Hygroscopic: Can absorb moisture from the air, leading to conversion to sodium sulfate decahydrate if not stored properly.

Synthesis: Sodium sulfate can be produced by various methods, including:

• Neutralization of sulfuric acid with sodium carbonate.
• Reaction of sodium bicarbonate with sulfuric acid.

Applications:

• Textile Industry: Used in dyeing processes as a leveling agent.
• Detergents: Acts as a filler and helps enhance the effectiveness of detergents.
• Glass Production: Used in the manufacture of glass to remove impurities.
• Chemical Manufacturing: Serves as a reagent and is used in the production of sodium sulfide.
• Laboratory Uses: Utilized in drying organic solvents and in various chemical reactions.

Safety and Handling:

• Safety Precautions: Generally considered safe, but avoid inhalation and contact with eyes. Use appropriate personal protective equipment (PPE).
• Storage: Store in a cool, dry place in a tightly sealed container to prevent moisture absorption.

Environmental Information:

• Environmental Impact: Sodium sulfate is non-toxic to the environment. However, large quantities should be managed to prevent salinization of water sources.

Regulatory Information:

• Follow local regulations for handling and disposal.

If you have any specific questions or need more detailed information, feel free to ask!