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preface to fifteenth edition

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3.12 SECTION 3<br />

3.2 PHYSICAL PROPERTIES OF PURE SUBSTANCES<br />

TABLE 3.2<br />

Physical Constants of Inorganic Compounds<br />

Names follow the IUPAC Nomenclature. Solvates are listed under the entry for the anhydrous salt. Acids are<br />

entered under Hydrogen and acid salts are entered as a subentry under hydrogen.<br />

Formula weights are based upon the International A<strong>to</strong>mic Weights of 1993 and are computed <strong>to</strong> the nearest<br />

hundredth when justified. The actual significant figures are given in the a<strong>to</strong>mic weights of the individual elements.<br />

Each element that has neither a stable iso<strong>to</strong>pe nor a characteristic natural iso<strong>to</strong>pic composition is represented<br />

in this table by one of that element’s commonly known radioiso<strong>to</strong>pes identified by mass number and relative<br />

a<strong>to</strong>mic mass.<br />

Density values are given at room temperature unless otherwise indicated by the superscript figure; for example,<br />

2.487 15 indicates a density of 2.487 g/cm 3 for the substance at 15C. A superscript 20 over a subscript 4 indicates<br />

a density at 20C relative <strong>to</strong> that of water at 4C. For gases the values are given as grams per liter (g/L).<br />

Melting point is recorded in a certain case as 250 d and in some other cases as d 250, the distinction being made<br />

in this manner <strong>to</strong> indicate that the former is a melting point with decomposition at 250C while in the latter<br />

decomposition only occurs at 250C and higher temperatures. Where a value such as 6H2O,<br />

150 is given it<br />

indicates a loss of 6 moles of water per formula weight of the compound at a temperature of 150C. For hydrates<br />

the temperature stated represents the compound melting in its water of hydration.<br />

Boiling point is given at atmospheric pressure ( 760 mm of mercury or 101 325 Pa)unless otherwise indicated;<br />

thus 82 15mm indicates that the boiling point is 82C when the pressure is 15 mm of mercury. Also, subl 550<br />

indicates that the compound sublimes at 550C. Occasionally decomposition products are mentioned.<br />

Solubility is given in parts by weight (of the formula weight)per 100 parts by weight of the solvent (i.e., percent<br />

by weight)and at room temperature. Another unit frequently used is grams per 100 mL of solvent (mL per<br />

100 mL for liquids and gases). The symbols of the common mineral acids represent aqueous solutions of these<br />

acids.<br />

Abbreviations Used in the Table<br />

a, acid<br />

abs, absolute<br />

abs alc, anhydrous ethanol<br />

acet, ace<strong>to</strong>ne<br />

alk, alkali (aq NaOH or KOH)<br />

anhyd, anhydrous<br />

aq, aqueous<br />

aq reg, aqua regia<br />

atm, atmosphere<br />

BuOH, butanol<br />

bz, benzene<br />

c, solid state<br />

ca., approximately<br />

chl, chloroform<br />

conc, concentrated<br />

cub, cubic<br />

d, decomposes<br />

dil, dilute<br />

disprop, disproportionates<br />

EtOAc, ethyl acetate<br />

eth, diethyl ether<br />

EtOH, 95% ethanol<br />

expl, explodes<br />

fcc, face-centered cubic<br />

fctetr, face-centered tetragonal<br />

FP, flash point<br />

fum, fuming<br />

fus, fusion, fuses<br />

g, gas, gram<br />

glyc, glycerol<br />

h, hot<br />

hex, hexagonal<br />

HOAc, acetic acid<br />

i, insoluble<br />

ign, ignites<br />

L, liter<br />

lq, liquid<br />

MeOH, methanol<br />

min, mineral<br />

mL, milliliter<br />

org, organic<br />

oxid, oxidizing<br />

PE, petroleum ether<br />

pyr, pyridine<br />

s, soluble<br />

satd, saturated<br />

sl, slightly<br />

soln, solution<br />

solv, solvent(s)<br />

subl, sublimes<br />

sulf, sulfides<br />

tart, tartrate<br />

THF, tetrahyrofuran<br />

v, very<br />

vac, vacuum<br />

viol, violently<br />

volat, volatilizes<br />

, less than<br />

, greater than

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