TENDENCIES OF USE OF THE TERM «ENANTIOTROPIC»
The term «enantiotropic» is used very little and occupies the 179.027
position in our list of most widely used terms in the English dictionary
10 ENGLISH BOOKS RELATING TO «ENANTIOTROPIC»
Discover the use of enantiotropic
in the following bibliographical selection. Books relating to enantiotropic
and brief extracts from same to provide context of its use in English literature.
Thermal Analysis of Pharmaceuticals
3.2.1 The Melting of Enantiotropic and Monotropic Polymorphs If a drug has two
enantiotropic polymorphic forms, either may be stable depending on the
temperature at a given pressure, whereas for monotropic polymorphism only one
form is ...
Duncan Q.M. Craig, Mike Reading, 2006
Water-Insoluble Drug Formulation
Giron (1995) and Haleblian and McCrone (1969) have described the different
phase diagrams resulting from monotropic and enantiotropic polymorphs. If the
free energies of two polymorphs (or a measure of the free energy such as vapor ...
Remington: The Science and Practice of Pharmacy
Enantiotropic System C, Monotropic System Temperature Temperature tiotropic
system on the left, at constant pressure, there are three solubility versus
temperature curves: Form II is the lowest, Form I is the next higher, and the
melting curve ...
David B. Troy, Paul Beringer, 2006
Handbook of Modern Pharmaceutical Analysis
The interconversion of such crystal forms is classified as being either
enantiotropic or monotropic, according to whether the transformation of one
modification into the other is reversible or not. Enantiotropic modifications
interchange reversibly ...
Satinder Ahuja, Stephen Scypinski, 2010
∆G form I I II II liq I liq I II II liq form II form II form I I liq liquid liquid Temperature
Temperature ∆G (a) (b) Figure 8.40 Free energy vs. temperature diagrams for two
polymorphs (forms I and II) showing free energy crossing points (a) enantiotropic
Jonathan W. Steed, Jerry L. Atwood, 2009
For enantiotropic polymorphs, the following relationships hold: The Gibbs free
energy relationship reverses below the melting point of polymorph II The melting
point of polymorph I < melting point of polymorph II Below Tt, DG>0, polymorph I
Robert Allen Carlton, 2011
Transformation of a Monotropic Mesophase Into an ...
The synthesis and the mesomorphic behavior of poly(methylsiloxane)s containing 4-methoxy-4'-hydroxy-trans-alpha-methylstilbene (4-n-PS) and 4-hydroxy-4'-methoxy-trans-alpha-methylstilbene (4'-n-PS) connected to the backbone by flexible ...
V. Percec, D. Tomazos, CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE., 1989
Physicochemical Basis of Pharmaceuticals
Humphrey Moynihan, Abina Crean. Hliq (I) (II) H H G(I) G (II) Gliq m.p. (II) t.p. m.p.
(I) Temperature Energ y FIGURE 4.19 Energy–temperature diagram for an
enantiotropic polymorphic system. [Reproduced with Permission from Burger, A.,
Humphrey Moynihan, Abina Crean, 2009
Liquid Crystals: Experimental Study of Physical Properties ...
Thus, the best definition for monotropic phases is that they are mesophases that
occur below the melting temperature', not the ones that occur only on cooling:
CrK - Me Z^±: I (enantiotropic) Mm (monotropic) An enantiotropic mesophase is
Modern Instrumental Analysis
When a solid system undergoing a thermal change in phase exhibits a reversible
transition point at some temperature below the melting points of either of the
polymorphic forms of the solid, the system is described as exhibiting
Satinder Ahuja, Neil Jespersen, 2006