Translation guide
The degree to which a substance can dissolve in a solvent, or the ability to be dissolved. In Japanese, this is most commonly expressed with the noun 溶解度 (youkaido) in scientific contexts, but related terms like 可溶性 (kayousei) and 溶解性 (youkaisei) are also used depending on nuance.
The measurable property of how much of a substance dissolves in a solvent, often used in chemistry and materials science.
The standard scientific term for solubility, referring to the maximum amount of solute that can dissolve in a solvent at a given temperature and pressure.
The quality of being able to dissolve, not necessarily in a strict scientific measurement.
A natural, everyday term meaning 'ease of dissolving' or 'solubility' in a non-technical sense. Used in cooking, daily life, and informal explanations.
砂糖の溶けやすさは水温によって変わる。
The solubility of sugar changes depending on water temperature.
溶解度 (youkaido) is the most precise term for solubility as a measurable quantity. 溶解性 (youkaisei) describes the general property of being soluble, often used in material data sheets. 可溶性 (kayousei) is more like 'soluble' as an adjective and is less common as a standalone noun. In everyday speech, 溶けやすさ (tokeyasusa) is preferred.
溶解度を測定する。
Measure the solubility.
溶解性に優れた素材。
A material with excellent solubility.
可溶性の粉末。
Soluble powder.
The solubility of this substance in water is very high.
温度が上がると溶解度も増加する。
As temperature rises, solubility also increases.
Refers to the property or tendency of being soluble, often used in technical descriptions of materials. Slightly broader than 溶解度, focusing on the quality rather than the exact measurement.
この化合物は脂溶性で、水への溶解性は低い。
This compound is fat-soluble and has low solubility in water.
Means 'soluble' or 'solubility' as a property, often used in compound words like 水溶性 (water-soluble). Less common as a standalone noun for solubility.
この粉末は水に可溶性です。
This powder is soluble in water.
この洗剤は溶けやすさが改善された。
The solubility of this detergent has been improved.
Refers to the dissolving power or capacity of a solvent, rather than the property of the solute. Sometimes used in contexts like cleaning or extraction.
この溶剤は油に対する溶解力が強い。
This solvent has strong solubility for oils.
In non-scientific Japanese, directly translating 'solubility' as 溶解度 can sound overly technical. Use 溶けやすさ or rephrase with 溶ける (to dissolve) when talking about everyday things like sugar or detergent.
In non-scientific Japanese, directly translating 'solubility' as 溶解度 can sound overly technical. Use 溶けやすさ or rephrase with 溶ける (to dissolve) when talking about everyday things like sugar or detergent.