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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 15, Number 3
JKCSEZ 15(3)
June 20, 1971 

Viscosities of Tetraalkylammonium Chloride Solutions in Isopropanol-Water Mixtures at 30℃

2-프로판올-물 혼합용매중의 tetraalkylammonium chloride 용액의 점도에 관한 연구
Byung-Rin Cho, Young-Ja Lee, Ikchoon Lee

조병린, 이영자, 이익춘
The relative viscosities ηr of a series of homologous tetraalkylammonium chlorides Me4NCl, Et4NCl, Pr4NCl and Bu4NCl in a series of isopropanol-water mixtures have been determined at 30℃ using Ubbelohde-type viscometers. The viscosity data have been interpreted in terms of viscosity A-and B-coefficients calculated from the Jones-Dole equation, ηr = 1 + AC1/2+ BC. The results indicate that the structure-breaking effect of chloride ion is maximum at 0.l~0.15 mole fraction isopropanol, while the size effect(Einstein effect) of the larger R4N+ ions is maximum at 0.2~0.25 mole fraction. The results also indicate that in aqueous and water-rich solutions the larger R4N+ ions (e.g. Pr4N+, Bu4N+) appear to be excellent structure-formers and that the viscosities of solutions is not strongly affected by the electrostriction effect of chloride ion.
159 - 163
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