Oil sprays in emulsion form are gaining prominence throughout the United States. Attention is called to the indefinite nature of recommendations for the preparation of homemade emulsions. "Red engine oil" as recommended is too indefinite, since hundreds of specifications for these oils arc possible with tremendous variation in viscosity, base, gravity, cold test and color. Pale or yellow oils would serve as readily for emulsions. Although paraffine oil has been specifically recommended, asphalt base oils lend themselves more readily to emulsification. The variability of water content and base of fish oil soaps is discussed along with the variations in specification- value. Experiences in several states have shown that recommendations for home prepared emulsions should take into consideration the character and type of soaps used as well as the types of water locally available. Until some careful tests are made with oils of varying types and viscosities, no specification for the oil most desirable for homemade emulsions can be offered.
Document Type: Research Article
Publication date: April 1, 1925
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