S

Sodium sulfate

IUPAC: disodium;sulfate

Na2SO4 Salts CAS 7757-82-6
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Quick Reference
Formula / NotationNa2SO4
CAS Number7757-82-6
Molecular Weight142.04
Melting Point884 °C
Density2.671
SolubilityIn water, 28.1 g/100 g water at 25 °C
AppearanceGas or Vapor; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Dry Powder, Pellets or Large Crystals, Liquid; Liquid; Dry Powder, Liquid, Ot...
Also Known Asdisodium;sulfate; 7757-82-6; Disodium sulfate; Sodium sulfate anhydrous; Sodium sulfate, anhydrous; Salt cake; Sodium sulphate; Sulfuric acid disodium salt; Disodium sulphate; Sodium sulphate anhydrous
CategorySalts

What is Sodium sulfate?

Sodium sulfate (Na2SO4) is a salt that appears as Gas or Vapor; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Dry Powder, Pellets or Large Crystals, Liquid; Liquid; Dry Powder, Liquid, Ot.... It has a molecular weight of 142.04 g/mol. Its IUPAC name is disodium;sulfate. Melting point: 884 °C.

Formula & Notation

Na2SO4

IUPAC Name: disodium;sulfate

Other Names / Synonyms: disodium;sulfate; 7757-82-6; Disodium sulfate; Sodium sulfate anhydrous; Sodium sulfate, anhydrous; Salt cake; Sodium sulphate; Sulfuric acid disodium salt; Disodium sulphate; Sodium sulphate anhydrous

Properties & Characteristics

Appearance: Gas or Vapor; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Dry Powder, Pellets or Large Crystals, Liquid; Liquid; Dry Powder, Liquid, Ot.... Molecular formula: Na2O4S. Molecular weight: 142.04 g/mol. Melting point: 884 °C. Density: 2.671. Solubility: In water, 28.1 g/100 g water at 25 °C.

Physical Data

PropertyValue
Melting Point884 °C
Density2.671
Molecular Weight142.04
SolubilityIn water, 28.1 g/100 g water at 25 °C
AppearanceGas or Vapor; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Dry Powder, Pellets or Large Crystals, Liquid; Liquid; Dry Powder, Liquid, Ot...

Uses & Applications

Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.

Safety Information

Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Sodium sulfate
Formula Na2SO4
CAS Number 7757-82-6
Molecular Weight 142.04
Category Salts
Synonyms disodium;sulfate; 7757-82-6; Disodium sulfate; Sodium sulfate anhydrous; Sodium sulfate, anhydrous; Salt cake; Sodium sulphate; Sulfuric acid disodium salt; Disodium sulphate; Sodium sulphate anhydrous

Frequently Asked Questions

Sodium sulfate (Na2SO4) is a salt that appears as Gas or Vapor; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Dry Powder, Pellets or Large Crystals, Liquid; Liquid; Dry Powder, Liquid, Ot.... It has a molecular weight of 142.04 g/mol. Its IUPAC name is disodium;sulfate. Melting point: 884 °C.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.