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This section is from the book "Distillation Principles And Processes", by Sydney Young. Also available from Amazon: Distillation Principles And Processes.

Modifications Of The Still-Head (continued). Part 2

Nature of still-head.	Glinsky	Le Bel-Henninger	Young and Thomas	Glinsky	Le Bel-Henninger	Young and Thomas		Young and Thomas
Number of sections.				3			3	6	12	18	18
Vertical height in cm.	30	43	51 1	30	43	511	51 1	78 1	122 1	'130	130
Weight of mixture distilled.		400		25			100
Final temperature.					Percentage weight of distillate.
80.7° ....									} 211	} 32.4	33.7
81.2 ....				. .	■ •			0.6	} 211	} 32.4	7.2
83.2 ....	1.2	0.6	0.3	0.6	0.4	0.6	0.4	22.8	18.6	9.6	3.4
86.2 ....	19.1	25.8	20.3	13.2	13.4	18.6	20.2	14.5	4.3	30	2.0
89.2 ....	14.2	12.1	13.9	150	15.2	15.2	14.5	6.3	1.9	1.5	1.2
92.3 ....	8.7	9.2	10.4	8.8	10.0	7.6	8.6	31	1.8	1.2	0.9
95.4 ....	6.6	4.3	4.5	6.8	7.4	6.0	5.2	2.5	1.3	0.9	0.7
98.5 ....	5.5	3.1	4.2	60	5.0	4.6	4.5	2.1	0.8	0.8	0.3
101.6 ....	61	4.3	3.3	6.4	5.2	3.8	3.7	1.7	0.8	1.0	0.4
104.6 ....	3.7	2.9	3.4	5.2	5.2	4.6	3.9	2.0	1.0	1.1	0.6
107.6 ....	6.2	4.8	3.8	20.8	9.6	5.6	4.9	3.9	1.8	1.4	1.2
1100 ....	7.1	6.0	8.3			9.8	8.5	4.6	4.1	2.8	2.8
110.6 ....	100	10.4	10.5			7.6	9.3	8.0	5.5	6 0	30
Pure toluene by differ-} ence . . . . /	11.6	16.5	17.1			160	16.3	27.9	370	38.3	42.6
	100.0	1000	1000	100 0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Weight of liquid and vapour in still-head	2.8	5.85	2.8	2.8	5.85	2.8	2.8	5.3	10.6	12.1	121

1 These were unnecessarily long.

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		Modifications Of The Still-Head (continued). Part 2