58 



Miscellaneous. Besides the work listed above, numerous analyses 

 have been made of whole oils or fractions of them, as well as of ex- 

 tracted oils from service piling; most of which have been done cooper- 

 atively, for the Sub-Committee having in charge the formulation of the 

 tentative specification for creosote oil for the preservation of marine 

 piling. Special mention may be made of the analysis of a sample of 

 the oil-gas tar creosote which is mentioned in the Specifications Sec- 

 tion of this report. This analysis showed the following results: 



Specific Gravity at 38 C 1.112 



Fractionation: 



210 C 0.0% 



210 235 C 24.7% 



235 315 C 11.3% 



315 355 C 7.3% 



Residue above 355 C 54-8% 



Loss by volatilization .. 1.9% 



100.0% 

 Specific Gravity of fraction 235 C 



315 C at 38 C 1,056 



Specific gravity of fraction 315 C 



355 C at 38 C 1.094 



Tar acids None 



Unsulfonated residue None 



Insoluble in benzol 0.24% 



Float test of residue above 355 C., 5 seconds. 



Remarks: Coke test was negative, no true coke being separated 

 in the residue. 



SPECIFI CA TIG \ S S K ( T ION 



The tentative specification severing creosoted piling and lumber 

 for use in marine structures which is herewith presented was under- 

 taken by the Committee only in response to insistent demands on the 

 part of contributors to the support of the Committee, and other local 

 cooperators, to whom the Committee was under primary obligation. 

 The Committee keenly realizes that the incompleteness of present 

 knowledge will make the establishment of satisfactory standards im- 

 possible until results become available of further investigations, such 

 as those now being undertaken by cooperating agencies throughout the 

 country, of which this Committee is one. But those who are respon- 

 sible for the installation and maintainance of marine piling feel equally 

 keenly the need of the best guidance which present knowledge can sup- 

 ply for their current purchases of creosoted materials. 



