EXPERIMENTAL WORK. 



21 



EXAMINATION OF THE CRUDE WOOD TURPENTINE. 



In addition to the work previously described, the crude wood 

 turpentine and light, heavy, and alkali-soluble oils were all roughly 

 fractionated to obtain information concerning the general nature of 

 these products. 



The crude turpentine from cooks 6, 7, and 8 (fresh chips), and also 

 that from cooks 9, 10, and 11 (steamed chips), were mixed to give two 

 samples for distillation. The results obtained are given in Table 6. 



TABLE 6. Fractionation of crude turpentine. 



i Above 165 C. 

 RESULTS OF THE DISTILLATION OF ROSIN AND OF ROSIN AND SODA. 



It was observed that the distillate from the dry distillation of the 

 black liquor was lighter than that from the distillation of rosin alone. 

 The general nature of the substance obtained from the redistillation 

 of the products of the dry distillation of rosin and of those from the 

 distillation of rosin in the presence of an excess of caustic soda is 

 shown in the following table: 



TABLE 7 Comparative data on the distillation of rosin and of rosin and soda. 



