. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 76 MASS. EXPERIMENT STATION BULLETIN 151. The amount (H) of such a compound in an oil, fat or wax is therefore — H=, d Molecular Weight of Hydroxy Compounds. The molecular weight of the hydroxy compounds can be calculated from the weight (w) of fat taken and the increase (i) on acetylating, pro- vided the number (d) of hydroxyls in the molecule is known: — w : w+i = m :m+ d m = dw The formation of anhydrides during the acetylating process will affect the accuracy of these calculations.
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 76 MASS. EXPERIMENT STATION BULLETIN 151. The amount (H) of such a compound in an oil, fat or wax is therefore — H=, d Molecular Weight of Hydroxy Compounds. The molecular weight of the hydroxy compounds can be calculated from the weight (w) of fat taken and the increase (i) on acetylating, pro- vided the number (d) of hydroxyls in the molecule is known: — w : w+i = m :m+ d m = dw The formation of anhydrides during the acetylating process will affect the accuracy of these calculations. The computation of the amount of hydroxy compounds by the gravi- metric process is greatly facilitated by use of the following table: — Acetyl Gravimetric Process on Original Product. Glycerides. Name. Molecular Weight. Molecular Weight after Acetylating. Theoretical Increase in Weight per Gram on Acetylating.' Reciprocal. Ricinolein, Dihydroxystearin .135124 .255447 Monoglycerides. Monopalmitin, Monostearin, Monolein, , Diglycerides. Dipalmitin, Distearin, Diolein, .073901 .067268 .067705 14 86591 Hydroxy Acids. Ricinoleic, Dihydroxystearic. .140865 .265682 Free Alcohols. Cholesterol, Phytosterol, .108746 .108746 1 Acetyl number = Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974
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