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preface to fifteenth edition

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11.4 SEPARATION METHODS<br />

TABLE 11.11<br />

Solvents of Chroma<strong>to</strong>graphic Interest<br />

Solvent<br />

Boiling<br />

point,<br />

C<br />

Solvent strength parameter<br />

e (SiO 2 ) e (Al 2 O 3 )<br />

Viscosity,<br />

mN · s · m 2<br />

(20C)<br />

Refractive<br />

index<br />

(20C)<br />

UV<br />

cu<strong>to</strong>ff, nm<br />

Fluoroalkanes 0.25 1.25<br />

Pentane 36 0.0 0.0 0.24 15C 1.358 210<br />

Hexane 69 0.0 0.0 0.31 1.375 210<br />

2,2,4-Trimethylpentane 99 0.01 0.50 1.392 215<br />

Decane 174 0.04 0.93 1.412 210<br />

Cyclohexane 81 0.05 0.04 0.98 1.426 210<br />

Cyclopentane 49 0.05 0.44 1.407 210<br />

Diisobutylene 101 0.06 1.411<br />

1-Pentene 30 0.08 0.24 0C 1.371<br />

Carbon disulfide 46 0.14 0.15 0.36 1.626 380<br />

Carbon tetrachloride 77 0.14 0.18 0.97 1.466 265<br />

1-Chlorobutane 78 0.26 0.43 1.402 220<br />

1-Chloropentane 98 0.26 0.58 1.412 225<br />

o-Xylene 144 0.26 0.81 1.505 290<br />

Diisopropyl ether 68 0.28 0.38 25C 1.369 220<br />

2-Chloropropane 35 0.29 0.33 1.378 225<br />

Toluene 111 0.29 0.59 1.497 286<br />

1-Chloropropane 47 0.30 0.35 1.389 225<br />

Chlorobenzene 132 0.40 0.80 1.525<br />

Benzene 80 0.25 0.32 0.65 1.501 280<br />

Bromoethane 38 0.37 0.40 1.424<br />

11.16

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