Table 100

Mixtures of n- Butyl Alcohol, Acetone, and Water.

n-Butyl Alcohol.

Density 20o

4o

Acetone.

Water.

9.93

90.07

• • •

0.98532

9.44

85.63

4.93

0.97903

8.92

80.95

10.13

0.97087

19.31

80.69

• • •

0.97307

18.33

76.61

5.06

0.96668

17.36

72.54

1010

0.95837

16.38

68.44

15.18

0.94947

15.40

64.36

20.24

0.93976

29.62

70.38

• • •

0.95779

26.59

63.19

10.22

0.94255

24 01

57.05

18.94

0.92763

21.12

50.18

28.70

0.91155

37.49

62.51

• • •

0.94499

33.69

56.17

10.14

0.93079

29.86

49.80

20.34

0.91421

2611

43.53

30.36

0.89916

22.37

37.30

40.33

0.88498

50.03

49.97

• • •

0.92057

4501

44.95

l0..04

0.90754

39.84

39.79

20.37

0.89434

35.06

35.01

29.93

0.88264

30.02

29.98

40.00

0.87080

28.23

22.20

49.57

0.86012

57.46

42.54

• • •

0.90469

51.53

38.15

10.32

0.89338

45.85

33.95

20.20

0.88211

40.06

29.68

30.26

0.87153

34.41

25.46

40.13

0.86157

22.92

16.95

60.13

0.84291

71.10

28.90

• • •

0.87219

63.56

25.83

10.61

0.86467

56.80

23.09

20.11

0.85980

49.89

20.22

29.89

0.85059

42.60

17.31

40.09

0.84366

35.50

14.43

50.07

0.83741

79.92

20.08

• • •

0.85020

63.81

16 02

20.17

0.84026

47.51

1219

40.30

0.83107

31.95

8.02

60.03

0.82300

15.97

4.01

80.02

0.81559

89.58

10.42

• • •

0.82222

80.55

9.37

10.08

0.82045

71.75

8.35

19.90

0.81880

62.72

7.30

29.98

0.81705

5411

6.30

39.59

0.81559

44.81

5.21

49.98

0.81423

35.85

417

59.98

0.81321

18.01

2.09

79.90

0.81111

95.10

4.90

• • •

0.80690

30.86

• • •

69.14

0.80360

50.00

• • •

50.00

0.79976

70.47

• • •

29.53

0.79637

The excess of acetic anhydride remaining was estimated in the usual way, and the n-butyl alcohol content ascertained.

In the case of mixtures of acetone, n-butyl alcohol, and water, the density of the solution, together with a determination of one of the constituents by the methods, already mentioned, gives sufficient data to calculate the composition of the mixture. For example, a mixture of acetone, n-butyl alcohol, and water was found to have a density of 0.8842 at 20°/4°. The acetone content on analysis proved to be 27.9 per cent. Now all mixtures having a density 0.8842 lie upon a curve between the heavily drawn lines marked 0.880 and 0.900 in the triangular diagram, Fig. 100. Similarly all mixtures containing 27.9 per cent acetone will lie upon a line parallel to the base of diagram. The intersection of these two lines will give on inspection the percentages of alcohol and water in the mixture. In this example there were found to be 35.6 per cent and 36.5 per cent respectively. It will prove most convenient in reading off the percentage composition of n-butyl alcohol and water to turn the triangular diagram into such a position that the substance to be read forms the apex of the triangle, this being the 100 per cent point.

Fig. 100.

Fig. 100