14 LABORATORY WORK IN PHYSIOLOGICAL CHEMISTRY. 



CH 2 OH 



GLYCEROL, CHOH 

 CH 2 OH. 



Make use of the solution obtained from the two saponifica- 

 tions for the following tests : 



(a) Note the taste and try its solubility in alcohol; ether; 

 water. 



(6) Add some dry potassium bisulphate and warm. 

 Compare this with the same reaction under Fats. Write the 

 equation. 



(c) Test with Fehling's solution. 



(d) To some dilute CuS0 4 add the remainder of the glycerol 

 solution; then drop by drop add dilute NaOH. What causes 

 the blue color of the solution? 



