Hydrophobic sol (English spelling)

...Hydrosols use water as a dispersion medium, while organosols use organic solvents such as benzene or vegetable oil as a dispersion medium. Among hydrosols, those that are relatively unstable and easily coagulate with the addition of a small amount of electrolyte, such as gold or iron oxide sols, are called hydrophobic sols, while those that are very stable and can only be salted out by the addition of a large amount of electrolyte, such as gelatin aqueous solutions, are called hydrophilic sols. Hydrophobic sols are stabilized by the electrostatic repulsion between the surface charges of the dispersed particles, while hydrophilic sols have a strong affinity for water and are stabilized by the development of a hydration layer on the surface of the dispersed particles.

*Some of the terminology that mentions "hydrophobic sol" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…水を分散媒とするものをヒドロゾルhydrosol，ベンゼンや植物油など有機溶媒を分散媒とするものをオルガノゾルorganosolという。ヒドロゾルのうち，金や酸化鉄のゾルのように，比較的不安定で微量の電解質の添加により容易に凝結するものを疎水性ゾルhydrophobic solといい，ゼラチン水溶液のように，非常に安定で大量の電解質の添加によって初めて塩析されるものを親水性ゾルhydrophilic solという。疎水性ゾルは分散粒子の表面荷電間の静電反発力により安定化されているのに対し，親水性ゾルは水と強い親和性をもち，分散粒子表面に水和層が発達し安定化される。…

※「hydrophobic sol」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報