TAYABAS PETROLEUM. 



Experiment 1. 



One hundred cubic centimeters of the crude oil in question when subjected 

 to the above treatment exhibited the following properties: 



Fraction. 



Specific 

 gravity 

 at 30° C. 



Baume. 



Differ- 

 ence. 



First tenth _ ... _ . _ _ 



Second tenth _ _ _ 



0.728 

 0.747 

 0. 759 

 0.773 

 0.792 

 0.815 

 0.841 

 0.865 



63° 

 58° 

 55° 

 51° 

 47° 

 42° 

 37° 

 32° 



5 

 3 

 4 

 4 

 5 

 5 

 5 



Third tenth _ _ 



Fourth tenth _ 



Fifth tenth 



Sixth tenth ... . _ _ _ 



Seventh tenth . ... _". 



Eighth tenth _ _ 





It will be noted that the gradation in the densities, as indicated in the column 

 of differences, is very regular and not indicative of any admixture of distilled 

 products. 



Experiment 2. 



Another 100 cubic centimeters of the crude oil was fractioned according to 

 Engler's Method. 2 



All the details of the distillation including the exact requirements of apparatus 

 as outlined, were closely followed. The fractions were collected at 25° C. intervals 

 with results as- follows: 



1 



Fraction. 



Degrees L t 

 centigrade. F er cent - 



1 . 



2 



80-100 5.7 

 100-125 11. 3 



3 '- 



125-150 



22. 





39.0 



4 -_ 



150-175 



10.0 ! 



5 .. 



175-200 7. 5 

 200-225 '7.5 

 225-250 9. 2 

 250-275 6. 9 

 275-300 6. 



6 -. 





8 



9_ _. 



Total amount 150°-300° C ... .. 







47.1 



10 (total residue above 300° C.) by difference 







13.9 









It will thus be seen that this oil is unusual in its relatively high proportion 

 of light oils and comparatively low percentage of heavy lubricants. 



Of 89 samples of crude oil from different parts of the world, tabulated by 

 Redwood, 3 only two show a higher percentage of light Oils, viz, one Russian and 

 one Italian oil, which contained 48.9 and 43.9 per cent of light oils, respectively; 

 yet the oil examined is not without precedent, for the Sumatra oils as a class show 

 a very similar composition. 



*.IMd., 534-530. 

 3 hoc. cit. 



