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preface to fifteenth edition

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5.62 SECTION 5<br />

TABLE 5.11<br />

Binary Azeotropic (Constant-Boiling) Mixtures (Continued)<br />

Composition, wt %<br />

System<br />

BP of azeotrope,<br />

C<br />

Water<br />

Other<br />

component<br />

Ke<strong>to</strong>nes (continued)<br />

2-Heptanone 95 48 52<br />

3-Heptanone 94.6 42.2 57.8<br />

4-Heptanone 94.3 40.5 59.5<br />

4-Hydroxy-4-methyl-2-pentanone 98.8 87.3 12.7<br />

4-Methyl-3-penten-2-one 91.8 34.8 65.2<br />

Nitriles<br />

Ace<strong>to</strong>nitrile 76.5 16.3 83.7<br />

Isobutyronitrile 82.5 23 l77<br />

Butyronitrile 88.7 32.5 67.5<br />

Acrylonitrile 70.6 14.3 85.7<br />

Miscellaneous<br />

Hydrazine 120 32.3 67.7<br />

Acetamide<br />

zeotrope<br />

Nitromethane 83.59 23.6 76.4<br />

Nitroethane 87.22 28.5 71.5<br />

2,5-Dimethylfuran 77.0 11.7 88.3<br />

Trioxane 91.4 30 70<br />

Carbon disulfide 42.6 2.8 97.2<br />

B. Binary azeotropes containing organic acids<br />

Composition, wt %<br />

System<br />

BP of azeotrope,<br />

C<br />

Acid<br />

Other<br />

component<br />

Formic acid<br />

2-Methylbutane 27.2 4 96<br />

Pentane 34.2 20 80<br />

Hexane 60.6 28 72<br />

Methylcyclopentane 63.3 29 71<br />

Cyclohexane 70.7 70 30<br />

Methylcyclohexane 80.2 46.5 53.5<br />

Heptane 78.2 56.5 43.5<br />

Octane 90.5 63 37<br />

Benzene 71.05 31 69<br />

Toluene 85.8 50 50<br />

o-Xylene 95.5 74 26<br />

m-Xylene 92.8 71.8 28.2<br />

Styrene 97.8 73 27

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