Some industrial developments and applications of multidimensional techniques.

Industrial analytical chemistry includes the measurement of the elemental composition and structure of molecules; the measurement of the concentration of specific molecules, atoms, and ions in contact with other molecules, atoms, and ions, the measurement of the energy and speed with which these reactions occur; and the separation of molecules, atoms, and ions specifically from other molecules, atoms and ions. It is also the measurement of the physical (interaction) and chemical (reaction) behavior of collections of molecules and how this behavior is controlled by the presence of other molecules and ions. Many excellent devices for separation and measurement have been developed to accomplish these tasks.

Determination of purity of compounds by extraction-solubility.

Thirty-three organic compounds prepared for use as analytical standards were examined for purity by the extraction-solubility method. Of these, twenty-one gave satisfactory results, seven behaved non-ideally, and five were not soluble in the useful range. Results on the twenty-one satisfactory samples compared favourably with those obtained by differential scanning calorimetry and other analytical methods.