THE PREPARATION OF SODIUM CHLORIDE OF LARGE SPECIFIC SURFACE

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Abstract
A procedure is outlined by which sodium chloride particles of specific surface up to 50 m2 per gm. may be prepared. The particles form in chains and are found to lose area rapidly in moist air. The fundamental units of the chain do not appear cubic. Single cubic particles or chains of cubic particles also have been prepared. The one sample identified as this type had a specific surface of 18 m2 per gm. The sintering in moist air appears to occur by a process of solution and recrystallization. A value of the interfacial free energy solid–liquid is calculated from the data.

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