M

Miscible

Two liquids miscible in all proportions; A + B → single phase (ΔG_mix < 0)
Quick Reference
Formula / NotationTwo liquids miscible in all proportions; A + B → single phase (ΔG_mix < 0)
Also Known AsMutually soluble, completely miscible, miscibility (adjective form)

What is Miscible?

Describes liquids that can be mixed in all proportions to form a homogeneous solution. Ethanol and water are miscible. Miscibility depends on intermolecular forces: like dissolves like. Liquids with similar polarities are generally miscible with each other.

Formula & Notation

Two liquids miscible in all proportions; A + B → single phase (ΔG_mix < 0)

Other Names / Synonyms: Mutually soluble, completely miscible, miscibility (adjective form)

Properties & Characteristics

Miscible describes two liquids that mix homogeneously in all proportions without separation. Miscibility is governed by intermolecular forces: "like dissolves like." Polar liquids with hydrogen-bonding capability (water, ethanol, methanol, acetone, DMSO) tend to be mutually miscible. Non-polar liquids (hexane, benzene, toluene) are miscible with each other but not with water. Partial miscibility (limited solubility) exists between intermediate polarity liquids.

Uses & Applications

Miscibility is applied in: choosing solvent systems for reactions and recrystallisations, preparing mixed solvent HPLC mobile phases, formulating antifreeze and windshield washer fluids, and in industrial processes requiring homogeneous liquid-phase reactions.

Safety Information

Miscibility increases exposure risk: a toxic compound miscible with water disperses readily in environmental water bodies and in the body. Handling miscible flammable solvents (acetone, ethanol, methanol) in the presence of water sources (even hands) can spread flammable liquids. Always have appropriate fire suppression available.

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

Key Facts

Term Miscible
Formula Two liquids miscible in all proportions; A + B → single phase (ΔG_mix < 0)
Synonyms Mutually soluble, completely miscible, miscibility (adjective form)

Frequently Asked Questions

Describes liquids that can be mixed in all proportions to form a homogeneous solution. Ethanol and water are miscible. Miscibility depends on intermolecular forces: like dissolves like. Liquids with similar polarities are generally miscible with each other.

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