TABLE 108. 



VARIATION OF THE DENSITY OF ALCOHOL WITH TEMPERATURE. 



(a) The density of alcohol at f- 1 in terms of water at 4 is given * by the following equation : 



d t =. 0.80025 0.0008340^ oooooo 2t)P. 

 From this formula the following table has been calculated. 



Density or Mass in grammes per cubic centimetre. 







10 

 20 

 3 



.80625 

 .79788 



78945 

 .78097 



.80541 

 .79704 



.78012 



.80457 

 .79620 



78775 

 .77927 



.80374 



79535 

 .78691 

 .77841 



.80290 



7945 1 

 .78606 



77756 



.80207 



79367 

 .78522 

 .77671 



.80123 

 .79283 

 78437 

 77585 



.80039 

 .79198 



78352 

 .77500 



.79956 

 .79114 

 .78267 

 774H 



.79872 

 .79029 

 .78182 

 773 2 9 



(b) Variations with temperature of the density of water containing different percentages of alcohol. Water 



at 4 C. is taken as unity, t 



Percent- 

 age of 

 alcohol by 

 weight. 



Density at temp. C. 



Percent- 

 age of 

 alcohol by 

 weight. 



Density at temp. C. 



25 



3 

 35 

 40 



45 

 50 



0.99988 



99'35 

 .98493 



97995 

 .97566 



0.97115 

 .96540 

 .95784 

 94939 

 93977 



0.92940 



099975 

 99"3 

 .98409 

 .97816 

 .97263 



0.96672 

 .95998 

 95'74 

 94255 

 93254 



0.92182 



0.99831 

 .98945 



975 2 7 

 .96877 



0.96185 

 95403 

 945H 

 935H 

 92493 



0.91400 



0-99579 

 .98680 



97892 

 .97142 

 .96413 



0.95628 

 9475 1 



.92787 

 .91710 



0.90577 



50 



II 



65 

 70 



75 



80 



85 

 90 



95 

 1OO 



0.92940 

 .91848 

 .90742 



89595 

 .88420 



0.87245 

 .86035 

 .84789 

 .83482 

 .82119 



0.80625 



0.92182 

 .91074 



89944 

 .88790 

 .87613 



0.86427 

 .85215 

 .83967 

 .82665 

 .81291 



0.79788 



0.91400 



90275 

 .891 29 

 .97961 

 .86781 



0.85580 

 .84366 



83U5 

 .81801 



80433 

 0.78945 



0.90577 

 .89456 



.87125 

 85925 



0.84719 



83483 

 .82232 

 .80918 

 79553 



0.78096 



* Mendelejeff, " Pogg. Ann." vol. 138. 



t Quoted from Landolt and Bomstein, " Phys. Chem. Tab." p. 223. 



SMITHSONIAN TABLES. 



9 8 



