Formula Index of Substances in Tables

All substances contained in the tables are listed with formula and name in the chemical formula index in alphabetical order. In order to simplify the search for substances in the tables, the formulae of the substances are also listed in a modified Hill index. In this index the formulae are listed according to the alphabetical order of the elements (see Chapter 12). 

This table gives the index of refraction n of several inorganic substances in the liquid state at specified temperatures. The measurements refer to ambient atmospheric pressure except for substances whose normal boiling points are greater than the indicated temperature in this case the pressure is the saturated vapor pressure of the substance. All values refer to a wavelength of 589 nm unless otherwise indicated. Entries are arranged in alphabetical order by chemical formula as normally written. 

As indicated on page 15, the formula of the substance, written according to the standard arrangement given on page 16, determines (1) the element under which the compound will be listed and (2) the position the compound will occupy in that section. In the table, all locations are exact in the text, all main locations are exact and the sublocations are approximately in the proper order. The index for the elements is given below. 

This index lists all compounds appearing in the azeotropic tables. Included are formula, name, standard boiling point, and numbers of the systems in which the compound appears as a component. The inorganic substances are indexed first. 

Compounds are listed by molecular formula following the Hill convention. Substances not containing carbon are listed first, followed by those that contain carbon. To locate an organic compound by name or CAS Registry Number when the molecular formula is not known, use the table Physical Constants of Organic Compounds in Section 3 and its indexes to determine the molecular formula. The indexes to Physical Constants of Inorganic Compounds in Section 4 can be used in a similar way. 

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