92 
(7) The proportion of vapor of carbon bisulphid in a sat- 
urated atmosphere. 
(8) The proportion of vapor produced in 1,000 cubic feet of 
air by the evaporation of 1 pound of carbon bisulphid. 
The following is abridged from the report prepared in res- 
ponse to this request in the Bureau of Chemistry by Mr. E. E. 
Ewell. 
AMOUNT OF CARBON BISULPHID IN A SATURATED ATMOSPHERE. 
Several factors affect this quantity, but the principle one 
is temperature. Beginning at the freezing temperature of water, 
32° F., a series of calculations was made with increments of 
9“ F. in temperature. As will be seen by the accompnaying 
table, the amount of carbon bisulphid taken up increases most 
rapidly as the highest temperature is approached. 
Amount of carbon bisulphid In a saturated atmosphere at 
different temperatures. 
(avoirdupois) 
Pounds 
Temperature. 
per 1.000 
cubic feet of 
air. 
32° F. ( 0° C.) •. 
35.8 
41° F. ( 5° C.) 
50° F. (10° C.) 
43.9 
59° F. (15° C.) 
53.5 
68° F. (20° C.) 
64 6 
77° F. (25° C.) 
77 6 
86° F. (30° C.) 
92 4 
95 c F. (35° C.) 
109 3 
104° F. (40° C.) 
1 28 6 
150.4 
In the following table are given the relative volumes of 
carbon bisulphid vapor and air in 100 volumes of an atmosphere 
saturated with vapor at the temperature named and at standard 
atmospheric pressure: 
Relative volumes of CS« vapor and air In 100 volumes of a saturated 
atmosphere (reduced to standard atmospheric pressure) 
at various temperatures. 
32“ F. ( 0“ C.) 
41“ F. ( 5“ C.) 
50° F. (10° C.) 
59“ F. (15° C.) 
68” F. (20° C.) 
77” F. (25” C.) 
86“ F. (30” C.) 
95” F. (35° C.) 
104” F. (40° C.) 
Temperature. 
Volume of 
CS 2 vapor 
Volume of 
air 
16.8 
83.2 
21.1 
78.9 
26.1 
73.9 
32.1 
67.9 
39.2 
60.8 
47.5 
52.5 
57.2 
42.8 
68.4 
31.6 
81.3 
18.7 
