
Potassium Peroxymonosulfate typically exists in the form of a compound salt (2KHSO₅·KHSO₄·K₂SO₄), also known as potassium monopersulfate trihydrate. It is a white, crystalline, powdery inorganic acidic strong oxidizing agent. Its active component is KHSO₅. It has a high oxidation potential (1.82 V), good stability, low toxicity, and is environmentally friendly. It is highly soluble in water and is widely used in disinfection, bleaching, and oxidation applications.
| Item | Specification |
| Melting point | N/A |
| Boiling point | N/A |
| Density | 1.12–1.20 g/cm³ |
| Flash point | N/A |
| Vapor pressure | <0.0000017 |
| PH | (10 g/L, 20 °C) 2.0–2.5 |
| Solubility | (20 °C) ≥250 g/L in water |
| Stability | Stable dry; decomposes >65 °C |
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