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Properties of 2‐hydroxyethylamine acylimide aqueous solution — unusual clouding phenomenon
Author(s) -
Ikeda Isao,
Katsura Tadashi,
Okahara Mitsuo
Publication year - 1978
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02676946
Subject(s) - protonation , chemistry , aqueous solution , methylamine , dissolution , hydrogen bond , amine gas treating , solvent , silanol , diffusion , inorganic chemistry , polymer chemistry , molecule , thermodynamics , organic chemistry , ion , catalysis , physics
Abstract Surface active and solution properties of 2‐hydroxyethylamine acylimides, such as dimethyl‐2‐hydroxyethylamine acylimides, bis(2‐hydroxyethyl) methylamine acylimides, and tris(2‐hydroxyethyl) amine acylimides were investigated. An unusual clouding phenomenon, which depends upon time after dissolving, concentration of aminimide, as well as temperature of the aqueous solution is discussed. The phenomenon may be explained by slow protonation to the negative center of the aminimide and slow rate to attain the equilibration of hydration by strong hydrogen bonding between a negative center and a hydroxyl group of the aminimide. The facts that the aminimide can exist in different forms in solid state as well as in solution, and that the forms are reversible by treating them with water or a nonpolar solvent, may also be explained by strong hydrogen bonding.