noun, noun which may take the genitive case particle 'no'
dispersiveness; dispersibility
Technical term used in fields such as chemistry, materials science, and physics to describe the property of being dispersible or the degree to which something can be dispersed. Often appears in compound nouns like 分散性染料 (disperse dye) or 分散性評価 (dispersibility evaluation).
この顔料は分散性が高いため、塗料に混ぜやすい。
This pigment has high dispersibility, so it is easy to mix into paint.
分散
A surfactant was added to improve dispersiveness.
溶解性 means solubility (dissolving in a solvent), whereas 分散性 is about dispersing particles in a medium without necessarily dissolving.
Compound of 分散 (dispersion) + 性 (property, -ity). The exact historical derivation is uncertain, but the word follows a common pattern for forming technical nouns describing properties.