428 



ODOROGRAPHIA. 



First mixture -.—Z?) per cent. Liiialciol-acetate, 47 per cent. 

 Linaluol and 20 per cent. Limonene. 



Second mixture : — 80 per cent. Linalool-acetate and 20 per 

 cent. Limonene. 



HOURS BOILED. 



VOLUME OF ACETIC- 

 ANHYDRIDE USED. 



0-3 

 1 

 1 

 2 



ESTER PERCENTAGE 



OF 

 RESULTING PRODUCT 



24-47 

 60-84 

 60- 

 68-2 



It follows from these instances that the etherification occurs 

 most completely after two hours' boiling with an equal volume of 

 anhydride, and that wherever constant conditions are observed it 

 results in figures admitting of comparison, but is yet nowhere 

 really quantitave. The resulting product of the second mixture, 

 for instance, should have contained 83-5 per cent, of ester if the 

 80 per cent, of linalool had been completely converted, but as a 

 matter of fact it only shows 68-2 per cent. Similarly, the first 

 mixture only gave 69-93 per cent, instead of the theoretical 82*2 

 per cent. 



'• Heated to 100' C. only. 



