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

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