66 KANSAS ACADEMY OF SCIENCE, 



0.4636 gram substance gave 0.5646 gram BaS04 (Carius). 



Calculated for 

 C2H50-S02-OaH„. Found, 



S 16.34 16.72 



Ethyl isoamyl sulphate is a colorless oil, resembling diethyl sul- 

 phate, but its odor is less agreeable, although somewhat like that of 

 bananas. Its boiling-point was found to be 127-128" at 15 mm. ; specific 

 oravity, 1.079 at 20"^ (Westphal): index of refraction for sodium 

 light. 1.4118 (Abbe). It is insoluble in and is not affected by cold 

 water, but dissolves readily in alcohol, ether, and ligroin. Heated 

 above 140", rapid decomposition begins. 



3. Upon Sodium Isobutylate. Ethyl Isobutyl Sulphate, C2H5O- 

 SO-2-OC4H9. Proceeding exactly as in the experiment last described, 

 25 grams (1.5 mols.) sodium isobutylate, freshly prepared and dried 

 at 180°-190° in a stream of hydrogen under reduced pressure, were sus- 

 jjended in about 100 cc. absolute ether, and treated with 30 grams 

 chlorsulphonic ethyl ester. On adding water to the clear ethereal 

 solution obtained, a copious gelatinous precipitate was instantly 

 formed. The products isolated were : 



Ethyl isobutyl sulphate, 18.7 grams, or 50 per cent. 



Sodium isobutyl sulphate, 9.6 grams, or 26 per cent. 



Sodium sulphate, 3.2 grams, or 11 per cent. 



The ethyl isobutyl sulphate obtained boils at 108° under a pressure 

 of 13 mm. and possesses the si^ecific gravity 1.098 at 23"' ( Westphal). 

 Its index of refraction for sodium light is 1.4068 (Abbe). It is a 

 colorless oil, insoluble in water, having an odor similar to that of 

 mandrake. In a sulphur determination (Carius), 



0.6276 gram substance gave 0.8183 gram BaSOi. 



Calculated for 

 C£Hr,0-S02-OC4H9. Found. 



S 17.60 17.90 



4. Upon Sodium Isopropylate. ,Ethyl Isopkopyl Sulphate, 

 C2H.',0-S02-OCbH7. On treating 27 grams (2 mols.) sodium isopro- 

 pylate, suspended in about 100 cc. absolute ether, with 22.8 grams of 

 chlorsulphonic ethyl ester, the following products were obtained : 



Ethyl isopropyl sulphate (crude oil), 16.2 grams, 62.2 per cent. 



Sodium isopropyl sulphate, 7.5 grams, 29.3 per cent. 



Sodium sulphate (not weighed). 



Ethyl isopropyl sulphate is less stable than the other alkyl sul- 

 phates here described, and consequently there is much loss in distill- 

 ing it even at reduced pressure. Its boiling point is 105"" at 18 mm. 

 pressure: the .specific gravity, 1.143 at 21° (Westphal), and the index 

 of refraction for sodium light, 1.4062 (Abbe). For the analysis a 



