Clarification of propylene glycol monoester polymorphism | Zendy

Lutton E. S. | Zendy; Stewart C. B. | Zendy; Martin J. B. | Zendy

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Clarification of propylene glycol monoester polymorphism

Author(s) -

Lutton E. S.,

Stewart C. B.,

Martin J. B.

Publication year - 1972

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/bf02633792

Subject(s) - polyvinyl alcohol , polymorphism (computer science) , chemistry , metastability , chromatography , organic chemistry , biochemistry , genotype , gene

A minor revision based on new data is reported for the polymorphism of 1‐propylene glycol monopalmitate and monostearate. Metastable Form I is now found to be intermediate in melting level between α and stable Form II. Form III as previously reported transforms to α below the α mp. For the 80:20 mix of 1‐propylene glycol monostearate‐2‐propylene glycol monostearate, the approximate equilibrium mixture, it is again observed that Form II is stable, melting a little above α; and Form I transforms to α slightly below the α mp; and Form III is missing.

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