1150. Fragrant Glycerine Lotions

1150.     Fragrant Glycerine Lotions. Any of the foregoing glycerine lotions may be rendered fragrant and more agreeable by employing rose water or elder-flower water, instead of water, or by the addition of a little eau de Cologne, lavender water, or other scent, at will. The addition of a few drops of essence of musk or of ambergris, per pint, or of a couple of ounces of eau de rose or eau de fleurs d'oranges, in lieu of an equal bulk of water, imparts a delicate odor which is always highly esteemed. In like manner they may be medicated or increased in efficacy, in various ways, for toilet and personal use.

Thus, the addition of a little borax (2 or 3 drachms per pint), renders them more effective in chaps, excoriations, etc.; a little salt of tartar, or of lemon juice, vinegar, or rectified spirit, increases their power of allaying itching and morbid irritability in skin-diseases, as well as converts No. 1 (more particularly) into an excellent wash for freckles and like dis-colorations. 8 or 10 grains of bichloride of mercury, per pint, converts it into the admirable lotion of that substance. {See No. 1145 (Lotion of Bichloride of Mercury).) In like manner, by the addition of a drachm or so of iodide of potassium, or of compound tincture of iodine, we have a healthful cosmetic wash particularly serviceable to persons with a scrofulous taint. Strongly scent it with the oils of origanum and rosemary, or impregnate it with a certain proportion of cantharides, or some other appropriate stimulant and rubefacient, and we have respectively the most cleanly, convenient, and useful hair cosmetics. Indeed, merely to enumerate all the uses it may be placed to in the cosmetic and allied treatment of the person, would alone fill many pages.

1151. To Test the Purity of Glycerine

1151.    To Test the Purity of Glycerine. Glycerine weighed at the temperature of 60° Fahrenheit should have no less than 29° B.; if it contains lime or alkalies, one degree should be deducted, as these substances make it heavier.

Rubbed on the hand, it should be perfectly inodorous. Impure glycerine, under this test, has a disagreeable smell. The impurity causing this odor is mostly butyric acid, as by contact with the glycerine it forms a very volatile glycerole. Such an article will always grow worse by age.

The presence of chlorine, sometimes used for bleaching glycerine, is detected by tinging the sample blue with sulphate of indigo, and then adding a little sulphuric acid; if free chlorine, or chloride of calcium, be present, the blue color will disappear.

If a few drops of a solution of nitrate of silver be added to glycerine, the presence of chlorine is marked by the formation of a white precipitate.

Oxalate of ammonia will precipitate lime, if present. Lead will be detected in the same way by hydrosulphate of ammonia; and sulphuric acid by a soluble salt of baryta.

Cane sugar may be traced by increased sweetness of taste; also by dissolving the glycerine in chloroform, in which it is completely soluble if pure, sugar being insoluble in it.