212 EXAMINATION OF NAPHTHA FROM RANGOON PETROLEUM. 
On analysis, the following results were obtained; No. I. refers to the fraction which 
boiled at 208.3° (corrected); No. II. to that boiling at 214.6°; and No. III. to that boil- 
ing at 219.5°. 0.1845 grm. of No. I. gave'0.2121 grm. water, and 0.5885 grm. carbonic 
acid (4); a second sample of 0.1826 grm. of No. I. gave 0.1525 grm. water, and 0.4235 
grm. carbonic acid (0.) ; 0.1387 grm. of No. II. gave 0,1654 grm. water, and 0.443 grm. 
carbonic acid (a); a second sample, of 0.1433 grm., of No. IL gave 0.1728 grm. water, 
and 0.4552 grm. carbonic acid (4); while 0.194 grm. of No. III. gave 0.2407 grm. 
water, and 0.6106 grm. carbonic acid. Or, 
Found. Theory. 
I. I. mm. (Cog Hys) 
a. b. a. b. 
Carbon, 86.99 87.10 87.09 86.60 85.83 85.7 
Hydrogen, 12.79 12.82 13.27 13.40 13.87 14.3 
99.78 99.92 100.36 100.00 99.70 100.0 
These figures accord with the formule I. (a) Cy Ha, (2) Co Haro:—H. (a) Cy 
Hoaios, (0) Cog Hoocg:— IIT. Cy Hogg; and point clearly to the presence of some 
substance less highly hydrogenized than laurylene. In a subsequent paragraph 
it will be shown that this disturbing element was naphthalin. That the naphthalin 
should have given rise to the formation of three heaps is a matter of no surprise in 
the present instance, since unfortunately the work of two operators happened to over- 
lap at this very point. One obtained the greater part of the naphthalin, the other most 
of the laurylene ; while between the two a spurious heap’ was formed. 
A determination of the vapor density of Nos. II. and III. gave the following 
results : — 
IL. HI. 
Temperature of balance, 7 . sy <i : f ; : - 12.5° 13° 
o “ oil-bath, e . . 3 ‘ A z * 7 256.5° 262° 
Excess of weight of balloon, . . . . . « « «  . 0.6247 0.6238 
Capacity s oe fe US ee ED te BB Sheree 226.5 c. ¢. 
Air remaining in et . o. a . . : R : Oo Oo « 
Height of barometer, . . . . «© «© «© « «© «759mm. at — 2° 748.6mm. at 3° 
Density of vapor found, ity Be Gh . . 5.980 6.051 
te et theoretical (C., Hy), ‘ ‘ ‘ ‘ 5.809 5.809 
The specific gravity of No. I. was found to be 0.8654 at 0°; that of No. II. to be 
0.8548 at 0°; and that of No. III. to be 0.8453 at 0°. 
Naphthalin— Cy Hz. In the course of the winter it happened that the temperature 
of the apartment in which the products from the Rangoon naphtha were kept, fell 
to 1° or 2° below zero, and remained at that point during several days. It was then 
1 See this volume, p. 200. 
