EMULSIFIERS:

Rosin Soap As An Emulsifier.

Yolk Of Egg As An Emulsifier.

Yolk of egg 10 parts
Balsam Peru  1 to 2 parts
Zinc oxide  5 to 10 parts
Distilled water100 parts

If desired, 33 parts of vinegar may be substituted for the same amount of water, while oil of cade, oil of birch, lianthral or storax may be substituted for the balsam Peru, and an equal quantity of talc, magnesium carbonate, sulphur of bismuth subcarbonate, may be introduced in place of the oxide of zinc. A further variation in the character of the liquid may be introduced by the use of medicated or perfumed waters instead of the plain distilled water. Where so diluted, as in the above formula, the yolk of egg separates out after long standing, but the mixture quickly reëmulsifies upon shaking. Tar and balsams can be emulsified by mixing with double their quantity of yolk of egg, then diluting by the addition of small quantities of water or milk.

Emulgen.

EMULSIONS OF PETROLEUM: See Petroleum.