The Chemistry of Cooking And Cleaning : a Manual for House Keepers
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Grease, as has been said, may be removed in Solvents of ' '7 ^ Grease. three ways, by forming a solution, an emulsion, or a true soap. Wherever hot water and soap can be applied, the process is one of simple emulsion, and continued applications should remove both the grease and the entangled dust; but strong 102 THE CHEMISTRY OF soaps ruin some colors and textures. Ammonia or borax may replace the soap, still the water may- affect the fabric, so the solvents of grease are safer for use. Chlorof...orm, ether, alcohol, turpentine, benzine and naphtha, all dissolve grease. In their commercial state some of these often contain im- purities which leave a residue, forming a dark ring, which is as objectionable as the original grease. Turpentine is useful for coarser fabrics, while chloroform, benzine and naphtha are best for silks and woolens. Ether or chloroform can usually be applied to all silks, however delicate. Whenever these solvents are used, there should be placed under the spot some absorb- ent material, like a thick pad of cloth, blot- ting paper or a layer of chalk to take up the excess of liquid.
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