Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Viscosities of Aqueous Solutions Containing Metal Complexes. III. Iminodiacetato and Methyliminodiacetato Complexes
Kiyoshi MizutaniMotoo Yasuda
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1973 Volume 46 Issue 1 Pages 157-159


The viscosities of aqueous solutions containing a metal chelate formed with iminodiacetic acid (H2ida) or N-methyliminodiacetic acid (H2mida) were measured with Cannon-Fenske capillary viscometers. Measurements were made in a Shibata viscosity bath maintained at 25±0.01°C. The Jones-Dole viscosity B-coefficient of each bis-ida chelate is lower than that of the corresponding bis-mida chelate, as may be expected. The B-coefficients for the mono-ida and mono-mida chelates were not determined accurately and will not be reported here. The B-value of cisN-[Co(ida)2] is higher than that of the trans-isomer. This is probably associated with the fact that the cis-isomer interacts with the solvent more strongly than the trans-isomer.

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