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Analysis of pentasodium triphosphate hydration kinetics
Author(s) -
Rodríguez Patino J. M.
Publication year - 1993
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/bf02545373
Subject(s) - crystallization , anhydrous , dissolution , kinetics , phase (matter) , water of crystallization , chemistry , chemical engineering , slurry , solvation , ion , materials science , inorganic chemistry , organic chemistry , physics , quantum mechanics , engineering , composite material
The present work analyzes the effect of various factors on the hydration of pentasodium triphosphate. The experimental method is based on application of the hydration test. Technical‐quality products with different proportions of phase I and phase II have been used. The variables studied are phase I/phase II ratio, initial temperature, particle size, stirring rate and composition of the slurry (presence of hexahydrate crystals and water hardness). The results have been discussed according to a kinetics model that includes a series of stages of a physical nature (dissolution of anhydrous salt and the crystallization of the hexahydrate), as well as of a chemical nature (solvation of the ions in solution). Crystallization of the hexahydrate may be the controlling stage in the process.