rf UTAH ACADEMY OF SCIENCES 173 
STANDARDIZATION FROM CONSTANT 
BOILING HYDROCHLORIC ACID 
BY J. T. BONNER AND T. B. BRIGHTON. 
(Abstract). 
A method for preparing standard solutions from con- 
stant boiling hydrochloric acid had been worked out for 
altitudes near sea level. There had, however, been no 
work done on the problem at this altitude. 
The object therefore of this investigation was to 
determine the composition and properties of constant 
boiling acid at this altitude and to correlate the results 
obtained with those obtained at or near sea level, thus 
if successful making the method a general one. 
To obtain the necessary data we have procured 
samples of constant boiling acid, both from chemically 
pure and from commercial acid. These samples were 
analyzed for chloride content, the specific gravity, and 
the coefficient of expansion determined. From the data 
on the coefficient of expansion we expect to be able to 
plot a graph from which the specific gravity at any 
temperature may be read directly. Such a graph will 
greatly simplify the process of standardization. 
