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Journal of Solution Chemistry

, Volume 19, Issue 8, pp 743–753 | Cite as

Dimethylpropyleneurea-water mixtures: 1. Physical properties

  • J. Stroka
  • I. Herfort
  • H. Schneider
Article

Abstract

Densities, refractive indices, viscosities, dielectric constants and the absorptions of several solvatochromic indicators have been determined at 25°C for mixtures of N,N′-dimethyl-N,N′-propyleneurea (DMPU) and water in the complete mole fraction scale. the results are compared with the properties of hexamethylphosphotriamide (HMPT) and its mixtures with water which show a striking similarity to DMPU and its mixtures with water. Since HMPT was found to be carcinogenic in animal tests, DMPU offers a suitable substitute since it may be regarded as safe under laboratory conditions.

Key words

DMPU HMPT density refractive index viscosity static dielectric constant donor and acceptor numbers ET(30) parameter 

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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • J. Stroka
    • 1
  • I. Herfort
    • 2
  • H. Schneider
    • 2
  1. 1.Department of ChemistryUniversity of WarsawWarsawPoland
  2. 2.Max-Planck-Institut für Biophysikalische ChemieGöttingenF.R.G.

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