MABERY AND QUAYLE. — CANADIAN PETROLEUM. 93 



Heptyl Thiophane. 

 Fraction 158°- 160° (At. Pres.), C 7 H 14 S. 



The heptyl sulphur compound was identified in the vacuum distillate 

 71°-73°, 50 mm., seventh distillation. After precipitation with alcoholic 

 mercuric chloride, and thorough washing with alcohol and light gasoline, 

 the thick viscous oil was decomposed with hydric sulphide in the presence 

 of alcohol. The oil that separated on dilution of the alcohol was fractioued 

 in vacuo until it distilled at 74°-76° under 50 mm., and at 158°-160°, 

 750 mm. A determination of its specific gravity at 20° gave 0.8878. Anal- 

 ysis gave percentages of carbon, hydrogen, and sulphur required for the 

 formula C : H ]4 S. Carbon and hydrogen were determined by combustion 

 in plumbic chromate, the sulphur by combustion in oxygen. 



I. 0.1749 gram of the oil gave 0.4141 gram C0 2 , and 0.1748 gram H 2 0. 

 II. 0.1G66 gram of the oil gave 0.3071 gram Ba0 4 . 



Found. 



25.31 



Octyl Thiophane. 



Fraction 167°-169° (At. Pres.), C 8 H 16 S. 



For the separation of the next sulphur homologue the large quantity 

 of distillate was selected that collected at 79°-81°, 50 mm., after the 

 seventh distillation. 100 c.c. of this, with the treatment described above, 

 yielded 20 c.c. of the sulphur compound, that distilled constant in vacuo 

 at 81°-83°, 50 mm., and at 167°-169° under atmospheric pressure. The 

 specific gravity of this oil was found to be 0.8929 at 20°. Its composition 

 was shown by the following analyses : 



I. 0.1666 gram of the oil gave 0.4057 gram C0 2 , and 0.1671 gram H 2 0. 

 II. 0.1391 gram of the oil gave 0.2282 gram BaS0 4 . 



Found. 



22.53 



