Essential Oils of Australian Myrtaceae. 1 55 



The results of a fractional distillation of 50 c.c. of the oil under 

 atmospheric pressure, and of the examination of the fractions obtained^ 

 are given in the following table: — 



The low initial boiling temperature combined with the positive rota- 

 tion of the oil, indicated the probable presence of pinene. In con- 

 firmation of this, a crystalline nitroso-chloride of melting point 106° C 

 was prepared from fraction B. Fraction D yielded a small quantity 

 of a crystalline nitrosite which could only be purified by dissolving 

 in chloroform and precipitating with petrol ; thus obtained it had a 

 melting point of 104° C. This indicated the presence of a small pro- 

 portion of phellandrene in the oil. The residue, H, was dissolved in 

 dry ether, and dry hydrochloric acid gas passed through; no crystal- 

 line hydrochloride could be isolated from the resulting product. 



For further examination of the oil and confirmation of the results 

 of the above preliminary investigation, 200 c.c. of the oil were 

 fractionated at 32 to 34 mm. pressure. The following results were 

 obtained: — 



Fraction. ^ST' SiUed. SG " ^-C/15'C a D at!9°C 



Pinene — Fraction I. yielded a nitroso-chloride similar to that pre- 

 viously obtained. The nitrol-piperide prepared from this compound 

 melted at 118-119° C. 



Phellandrene. — Fraction II. yielded a small quantity of nitrosite, 

 which after purification melted at 105-106° C. There seems little 

 doubt that this was phellandrene nitrosite. 



