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fractions. Actually by a sufficient number of distillations the original mixture can be obtained essentially as the desired products. For example, assume that fractions 11 and 15 represent the desired separation, then fractions 12, 13, and 14 can be redistilled as shown in Fig. 5-2 to give fractions 11' and 15' which can be obtained as the same

ORIGINAL] MIXTURE

2[RESIDUE 1 3 IPISTILLATEj

71 RESIDUE] 8 IDIST RESj 0 IdISTREs ] to IPISTILLATEj

71 RESIDUE] 8 IDIST RESj 0 IdISTREs ] to IPISTILLATEj

Fig. 5-1. Fractionation diagram.

Fig. 5-1. Fractionation diagram.

Fig. 5-2. Fractionation diagram.

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