Very impure fats yield even a higher percentage in spite of acidifying.
But the free coloured acid, which is precipitated by acidifying solutions of the salt, is very sparingly soluble in water.
But still the propensity to acidifying remains, and a cautious attention to diet, and to the evacuations is always necessary.
Confirm by acidifying the filtrate with acetic acid and adding potassium ferrocyanid.
The lower grade of celluloses thus dissolved are only in part precipitated in acidifying the alkaline solution.
On acidifying with sulphuric acid and distilling, traces only of volatile acid were produced.