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Table 10. Partial Pressure of Formaldehyde Solutions at Bailing Point under
Ordinary Pressure.
CHsO
Concrt.
2.4
3.1
5.1
5.9
S.2
9.6
10,0
15-2
16.8
19.6
21.6
24,7
2S.4
29.3
32.2
32.7
34.4
36.4
36.1
40,9
120
Auerbach anrl Barscliall 1
Total
Pressure
734
765
736
765
737
765
740
740
740
763
763
767
763
764
752
764
763
752
763
763
Temp.
res
90.1
100.1
99.0
100.0
99.0
99 7
98.9
98-S
QS.S
99.3
99.2
99.2
99.1
99.1
99.0
99.1
99.1
98.9
99.1
99.1
P
CH.D
y,9
13.2
19.9
23.1
28.1
34.0
3S.5
53.7
61.5
76.5
56.5
101.3
106.7
100.0
90.3
95.3
97.2
109.9
112.6
117.1
CH:0
Concn.
4.55
4.71
7.06
7.03
11,74
17.34
17.50
19.51
19.54
25.90
25.90
10.0
20.0
30.0
40.0
Korzliev and RassinEkayA 1 '-
Total
Pressure
735
753
735
753
753
735
753
753
735
735
753
Temp.
r c; - CH5O
99.0 ' 23.4
99.0 24.6
98.5 j 39.0
98.S I 43.6
98.5 ! 54.4
97.5 , 81.1
98.5 ! 85.1
98.5
97.5
SS.9
87.2
97.5 109.5
98.5 114,5
i
Ca.lcu.ULt.ed from Lacv Equation
M I I I 1 1 II I I I I I I I I II
6 6 10 12 14 16 IS 20 22 24 26 28 30 32 34 36 38 40
FORMALDEHYDE CONCENTRATION IN PER CENT BY WEIGHT
Fig. 11. Partial pressure of formaldehyde over aqueous solutions at approximately
98-100° C.
Curve I—Data oi Korshev and Rossisskaya,
Curve II—Laey Equation
Curve III—Data of Auerbach
55
99
99
99
99
•it
SI
105
120