COAL-TAE AND WATER-GAS TAR CREOSOTES, 105 



Table 38. — Specifications for tvater-gas tar products to be used with zinc chloride. 



Requirements. 



Distillate oil 



Water-gas-tar solution. 



Composition 



Water content 



Insoluble in benzol 



Speeific gravity at 38° C. referred to water at 



15.5° C. 



Distillates up to 210° C 



Distillates up to 235° C 



Distillates up to 355° C 



Specific gravity of fraction at 38° C. referred 



to water at 18. 5: 



Fraction 235° to 315° C 



Float test must not exceed 50 seconds at 70° 

 C. if the distillation residue at 355° C. ex- 

 ceeds. 



Coke residue 



A pure distillate of water- 

 gas tar. 



N. M, 3 per cent i 



N. M. 0.5 per cent 



JN.L. 1.02 2 



N. M. 5 per cent 



N. M. 25 per cent 



N. L. 80 per cent 



/N. L. 0.98 



\N.M.1.02 



5 per cent 



N. M. 2 per cent 



60 per cent distillate of water- 

 gas tar; 40 per cent refined 

 or filtered water-gas tar. 



N. M. 3 per cent. 



N. M. 2 per cent. 

 fN.L. 1.03. 

 iN.M.1.07. 



N. M. 8 per cent. 



N. M. 20 per cent. 



N. L. 60 per cent. 



N. L. 0.98. 

 N. M. 1.02. 

 5 per cent. 



N. M. 10 per cent. 



N. M.=Not more than. 



2N. L.=Notlessthan. 



