The abbreviations are:ĭata were taken from a wide variety of reliable sources, including monographs, treatises, review articles, evaluated compilationsĪnd databases, and in many cases the primary literature. Solubility in other solvents (and in water, if quantitativeĭata are unavailable) is given here. Qualitative Solubility: Qualitative information on the “Aqueous Solubility of Inorganic Compounds at Various Solubility at other temperatures can be found for many compounds in the table The temperature in ☌ is given as a superscript. Of grams of the compound (excluding any water of hydration) that will dissolve in 100 grams of water. Unit is always specified for a gas value.Īqueous Solubility: Solubility is expressed as the number Values for gases are the calculated ideal gasĭensities in grams per liter at 25☌ and 101.325 kPa the Refer to temperatures near room temperature unless otherwise stated. Units of grams per cubic centimeter and can be assumed to Perceptible sublimation pressure above the solid at ambient temperatures.ĭensity: Density values for solids and liquids are always in Without a temperature being given indicates that there is a 23, for further discussion of sublimation points and triple points. The vapor in equilibrium with the solid reaches 101.325 Number indicates the temperature where the pressure of When available, theīp: Normal boiling point in ☌ (referred to 101.325 kPa The temperature where solid, liquid, and gas are in equilibrium at a pressure greater than one atmosphere (i.e., the Physical Form: The crystal system is given, when available,įor compounds that are solid at room temperature, together with color and other descriptive features. Radioactive elements for which IUPAC makes no recommendation, the mass number of the isotope with longest Two places for compounds of selenium, germanium, etc.) Ī maximum of three places is given. The number of places in the atomic weight of the least accurately known element (e.g., one place for lead compounds, The number of decimal places corresponds to Weight: Molecular weight (relative molar mass) asĬalculated with the 2005 IUPAC Recommended Atomic In most cases the generic CAS RN for theĬompound is given rather than the number for a specific Hydrate indicates that the number refers to the anhydrousĬompound. Made, such as the use of Hg2+2 for the mercury(I) ion.ĬAS Registry Number: Chemical Abstracts Service The structure in the solid phase (and, under some conditions, in the gas phase) is Al2Cl6 A few exceptions are For example, aluminum chloride is designatedĪs AlCl3, even though a more accurate representation of This does not necessarily specify the actual structure of theĬompound. Than cuprous, iron in the +3 state is iron(III) rather thanįormula: The simplest descriptive formula is given, but State of a metallic element is indicated by a Roman numeral, e.g., copper in the +1 state is written as copper(I) rather The following data fields appear in the table: There is also an index to CAS Registry Numbers.

Index following the table provides another means of locating aĬompound. Likewise, the oxoacids of an element are given in one group whenever a strict alphabetical order would separate them (e.g., sulfuric acid and fluorosulfuric acid). Germanium are grouped together immediately following the entryįor the parent element, since they would otherwise be scattered For example, hydrides of elements such as boron, silicon, and

Many instances so as to bring closely related compounds together.

More forms are of practical importance, and separate entries willĬompounds are arranged primarily in alphabetical order by the In the absence of other information, the data given here can be assumed to apply to the most Many, if not most, of the compounds that are solids at ambient temperature can exist in more An effort has been made to include the mostįrequently encountered inorganic substances a limited number of Laboratory and industrial importance, as well as their value in illustrating trends in the variation of physical properties with position The compounds in this table were selected on the basis of their Physical Constants of Inorganic Compounds CRC Handbook of Chemistry and Physics, 88th Edition

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