The physical and chemical properties and technical indicators of potassium hydrogen persulfate

Potassium persulfate

[Alias] "Potassium monopersulfate compound salt, potassium peroxymonosulfate triple salt potassium peroxymonosulfate salt; English name Ox-one, Potassium Monopersulfate Compound, Potassium, Monopersulfate triple salt, potassium-sium peroxy monopersulfate; Abbreviation ：PMPS or KMPSCAS No.

[Structural formula] Compound molecular formula: 2KHSO ₅ ·KHSO ₄ ·K ₂ SO ₄ , relative molecular weight 614.

Molecular Structure:

[Physical and chemical properties]

Physical properties: It is a free-flowing white powdery solid, easily soluble in water, and the water solubility is greater than 250g/L at 20°C

Chemical characteristics: The active substance of potassium hydrogen persulfate compound salt is potassium hydrogen persulfate KHSO ₅ (or known as potassium hydrogen persulfate)

Table 7-16 Solubility and active oxygen of potassium hydrogen persulfate

[Technical Index]

[Preparation method] The raw materials for preparing the double salt are peroxymonosulfuric acid, sulfuric acid and potassium carbonate .

① It can be prepared by reacting hydrogen peroxide with metered chlorosulfonic acid

②Anodic oxidation method: electrolyze sulfuric acid with a platinum electrode electric cell, and the generated peroxodisulfuric acid H ₂ S ₂ O ₈ will be hydrolyzed at room temperature for 5 hours to generate peroxodisulfuric acid.

H ₂ S ₂ O ₈ +H ₂ O=H ₂ SO ₅ +H ₂ SO ₄

Synthesis of potassium hydrogen persulfate double salt: Potassium hydrogen persulfate double salt is prepared by reacting a mixture of peroxymonosulfuric acid and sulfuric acid with potassium carbonate in a certain ratio.

Figure 7-7 Synthesis process of potassium hydrogen persulfate double salt