Journal of Solution Chemistry

, Volume 9, Issue 11, pp 819–826 | Cite as

Viscosities of aqueous solutions of quaternary phosphonium bromides at 15, 25 and 35°C

  • Katsuko Takaizumi
  • Toshiki Wakabayashi


The viscosities of aqueous solutions of Bu 4-n Ph n PBr n=0–4 have been measured over the concentration range 0.01–0.2 M at 15, 25 and 35°C, to examine the differences in ion-water interactions of these quaternary cations. The viscosity data were treated by the extended Jones-Dole equation, including the square term in solute concentration, Dc2. A decrease in the B coefficient with increase in the number of phenyl groups n, and with increasing temperature is observed. Nearly linear dependence of the B coefficient on n was found, in contrast with partial molal volumes for which non-linear relations with n have been found. D decreases with increasing temperature but becomes independent of n at higher temperatures.

Key words

Viscosity tetrabutylphosphonium bromide tributylphenylphosphonium bromide dibutyldiphenylphosphonium bromide butyltriphenylphosphonium bromide tetraphenylphosphonium bromide aqueous solution 


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Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • Katsuko Takaizumi
    • 1
  • Toshiki Wakabayashi
    • 1
  1. 1.The College of General EducationTohoku UniversitySendaiJapan

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