394 J. M. Crafts on the Product of the Reaction between 
I. 01735 grams substance, obtained 02540 grms.CO, and 0°1082 ; 
Il. o1790 “ «“ «96946 Ba,0 SO, sein, 
TIL 0°2531 “ se 09845 “ Ba,0S0O, 
I. m. Theory C,H,S 
C= 89-93 Sela Meee 40°00 
H= 6°92 + yoke aes 6°67 
s 53°25 53°37 53°33 
10000 
This analysis leads to the empyrical formula, C,H,S. 
The sulphid of ethylene is a solid body, somewhat volatile at 
the ordinary temperature, and has a peculiar odor, whi 
although disagreeable, is not nearly so strong as that of mercap- 
tan. It is slightly soluble in water; in alcohol, ether and bisul- 
phid of carbon, it is easily soluble, and more so when the sol- 
vents are hot than at the ordinary temperature. 
By gradual evaporation of its solution in the bisulphid of car- 
bon, the sulphid of ethylene may be obtained in transparent 
crystals of considerable size with brilliant surfaces, which, how- 
ever, after a short time become dimmed by the slow evaporation 
of the substance in the air. I am indebted to the kindness of 
Mr. Friedel for the measurement of these crystals. They belong 
to the clinorhombic system. 
In the larger crystals, the base (P) 
is usually much developed; in the 
smaller, the faces (P) and (a’) are 
nearly equally developed. The faces 
observed are, oc P=(M); 0P=(P), 
and Pa =(a’). Vertical axis on in- ; 
clined axis =47° 59’. Prismatic edge of base on inclined axis 
=27° 38’. ? 
Angles measured. Angles calculated. 
Pot 6 yo, G1" ae 81° 13’ 
Frm 112 30 
M:M 69 44 
ey }ii 3] 
Te ee ON, pee ies ante Pe 
i 
3 
: 
ee 
of 
In polarized light a system of rings is observed very oblique 2 
to the face (P), and another almost normal to (a’). 
The solidifying point of the crystals, after they have been 
aioe is 112°. The boiling point is 199°-200° C. ) 
The i i 
aqueous or in alcoholic solution, or even when heated to ts boil ; 
ing point in an atmosphere of the gas. It is readily attacked 
by concentrated nitric acid; red fumes are given off, and : paid 5 
tallized product of oxydation is formed. Only traces r 
phuric acid are produced, even when fuming nitri¢ acid is em 
ployed. 
e oxydation by means of bromine in the eerste 
of water gives rise to the same crystallized product as that? 
tained with nitric acid. 
