Phase and extraction equilibria in the water—ethoxylated nonylphenol—sodium sulfate system

Data regarding the solubility of salts in the KNO3–KH2PO4–K2SO4–H2O system can be used to optimize the composition of liquid complex fertilizers. This research considers phase equilibria in the quaternary system KNO3–KH2PO4–K2SO4–H2O at 298.2 K for the first time. A phase diagram with a plotted grid of isohydric lines was constructed based on the results of the experiment. The phase diagram displays a single quaternary invariant point, three ternary invariant points, three univariant curves, and three crystallization regions that correspond to KH2PO4, K2SO4, and KNO3. Among these, the crystallization region of K2SO4 is the largest, while that of KNO3 is the smallest. The order of decreasing solubility for the salts is KNO3 > KH2PO4 > K2SO4. No crystalline hydrates, double salts, or solid solutions were found in the system. The solution that is maximally saturated with salts corresponds to the quaternary invariant point.

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New generation extraction solvents: from ionic liquids and aqueous biphasic systems to deep eutectic solvents

Pletnev¹,

Smirnova²,

Sharov³

et al. 2021

Russ. Chem. Rev.

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Phase and extraction equilibria in the water—ethoxylated nonylphenol—sodium sulfate system

Cited by 4 publications

References 14 publications

Phase equilibria and extraction of metal ions in systems based on mixtures of oxyethylated nonylphenols

Phase equilibria and extraction of metal ions in systems based on mixtures of oxyethylated nonylphenols

Phase Equilibria in the KNO₃–KH₂PO₄–K₂SO₄–H₂O System at 298.2 K

New generation extraction solvents: from ionic liquids and aqueous biphasic systems to deep eutectic solvents

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Phase and extraction equilibria in the water—ethoxylated nonylphenol—sodium sulfate system

Cited by 4 publications

References 14 publications

Phase equilibria and extraction of metal ions in systems based on mixtures of oxyethylated nonylphenols

Phase equilibria and extraction of metal ions in systems based on mixtures of oxyethylated nonylphenols

Phase Equilibria in the KNO3–KH2PO4–K2SO4–H2O System at 298.2 K

New generation extraction solvents: from ionic liquids and aqueous biphasic systems to deep eutectic solvents

Contact Info

Product

Resources

About

Phase Equilibria in the KNO₃–KH₂PO₄–K₂SO₄–H₂O System at 298.2 K