sekoittuvina

Sekoittuvina is a Finnish term used to describe substances that can mix with each other to form a homogeneous phase. In chemistry and materials science, the concept is commonly known in English as miscibility. When two liquids are sekoittuvina, they dissolve in each other in all proportions under given conditions, yielding a single phase; substances that cannot mix are described as epäsekoittuvia (immiscible) and separate into distinct layers.

The word derives from the verb sekoittua, meaning to mix, with the participial roots sekoittuva and the plural modifier sekoittuvina, used to describe substances or mixtures in a mixed state. In practice, sekoittuvina is often used in technical writing and formulation science to indicate mutual solubility. Temperature and pressure can affect sekoittuvuus, so some pairs are sekoittuvia only within certain ranges.

Common examples include water and ethanol, which are sekoittuvina and form a uniform solution. In contrast, water and oil are typically not sekoittuvina and exhibit phase separation. In polymer blends and solvent systems, determining sekoittuvuus is crucial for predicting material properties and processing behavior.

Related terms include sekoittuvuus (miscibility) and epäsekoittuvuus (immiscibility). The concept is also connected to phase diagrams and solubility principles, which help describe which pairs of substances can be sekoittuvina under given conditions.