Developments in Applied Spectroscopy pp 53-75 | Cite as
A Study on the Change of Water of Crystallization by X-Ray Diffraction Data Stored in ASTM Magnetic Tape
Abstract
One of the important uses of x-ray diffraction data has been the detection, identification, and semiquantitative determination of the existence of a number of molecules of water in an organic or an inorganic compound. Listings of the hydrated compounds are to be found in the ASTM x-ray diffraction file. Among the 18,000 entries, some of them are known to have water of crystallization ranging from one to as many as five or more molecules. The ASTM x-ray diffraction data have been computerized. In its latest version, a search by Fortran IV on the change of water of crystallization involving one or more species can be carried out in a matter of seconds. For this study, any change in water of crystallization due to experimental conditions resulting in the appearance of new x-ray diffraction patterns is ascertained by introducing these data to the computer. Specific examples will be given in this paper.
Keywords
Copper Sulfate Calcium Sulfate Powder Diffraction File Anhydrous Form Direct FilePreview
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