P

Potassium sulfate

IUPAC: dipotassium;sulfate

K2O4S Salts CAS 7778-80-5
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Quick Reference
Formula / NotationK2O4S
CAS Number7778-80-5
Molecular Weight174.26
Melting Point1067 °C
Boiling Point1689 °C
Density2.66
SolubilityFreely soluble in water, insoluble in ethanol
AppearanceOther Solid; Liquid; Dry Powder; Pellets or Large Crystals; NKRA
Also Known Asdipotassium;sulfate; 7778-80-5; Dipotassium sulfate; Potassium sulphate; Sulfuric acid dipotassium salt; Arcanum duplicatum; Sulfuric acid, dipotassium salt; Kalium sulphuricum; Tartarus vitriolatus; Kali sulphuricum
CategorySalts

What is Potassium sulfate?

Potassium sulfate (K2O4S) is a salt that appears as Other Solid; Liquid; Dry Powder; Pellets or Large Crystals; NKRA. It has a molecular weight of 174.26 g/mol. Its IUPAC name is dipotassium;sulfate. Boiling point: 1689 °C. Melting point: 1067 °C.

Formula & Notation

K2O4S

IUPAC Name: dipotassium;sulfate

Other Names / Synonyms: dipotassium;sulfate; 7778-80-5; Dipotassium sulfate; Potassium sulphate; Sulfuric acid dipotassium salt; Arcanum duplicatum; Sulfuric acid, dipotassium salt; Kalium sulphuricum; Tartarus vitriolatus; Kali sulphuricum

Properties & Characteristics

Appearance: Other Solid; Liquid; Dry Powder; Pellets or Large Crystals; NKRA. Molecular formula: K2O4S. Molecular weight: 174.26 g/mol. Boiling point: 1689 °C. Melting point: 1067 °C. Density: 2.66. Solubility: Freely soluble in water, insoluble in ethanol.

Physical Data

PropertyValue
Melting Point1067 °C
Boiling Point1689 °C
Density2.66
Molecular Weight174.26
SolubilityFreely soluble in water, insoluble in ethanol
AppearanceOther Solid; Liquid; Dry Powder; Pellets or Large Crystals; NKRA

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 Potassium sulfate
Formula K2O4S
CAS Number 7778-80-5
Molecular Weight 174.26
Category Salts
Synonyms dipotassium;sulfate; 7778-80-5; Dipotassium sulfate; Potassium sulphate; Sulfuric acid dipotassium salt; Arcanum duplicatum; Sulfuric acid, dipotassium salt; Kalium sulphuricum; Tartarus vitriolatus; Kali sulphuricum

Frequently Asked Questions

Potassium sulfate (K2O4S) is a salt that appears as Other Solid; Liquid; Dry Powder; Pellets or Large Crystals; NKRA. It has a molecular weight of 174.26 g/mol. Its IUPAC name is dipotassium;sulfate. Boiling point: 1689 °C. Melting point: 1067 °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.