โ Scribed by Gabel, L.F.
No coin nor oath required. For personal study only.
Although the value of benzoin as a preservative of lard has seemed well established in the older literature, there has recently been some question on this point.
Measuring the deterioration by the liberation of free iodine from potassium iodide, it was found that plain lard deteriorates several times as rapidly as benzoinated lard.
In regard to the decolorization of iodine by unsaturated fats, it was found that benzoin reduces the rate of absorption of iodine a t the ethylenic linkages.
Although 0.5% of hydroquinone has been found to retard the development of rancidity in lard, it is not suitable for use as a stabilizer in ointment of potassium iodide, on account of the color developed, varying from gray to brown.
The color of Ointment of Potassium Iodide, N. F. V changes from white to gray after several weeks. The ingredient responsible for this change is the benzoin used as a stabilizer in the lard.
๐ SIMILAR VOLUMES