128 FATS. 



5. To a solution of egg albumin add 1 volume of olive oil. 

 Shake, rest, a more or less perfect emulsion results, 

 depending on the strength of the albumen solution. 

 The mechanically separated fat is kept suspended by 

 the viscidity of the proteid. 



Acetone (dimethyl ketone) belongs to the acetic acid series. 

 Perform the following test on a 2 p - c - solution of commercial 

 acetone in water. Note its ethereal odour. 



Legal* s test. A few drops of an aqueous solution of sodium nitro- 

 prusside + KOH = red colour which rapidly disappears, 

 and gives purple or violet red with acetic acid. See 

 Creatinin. 



Interest attaches to this substance owing to its appearance in the blood and 

 urine in diabetes mellitus. It may occur temporarily in the breath, &c., with highly 

 nitrogenous diet. 



