Transparent soaps

Castile soap is manufactured from olive oil, transparent soap from decolorized fats and liquid green soap from KOH and vegetable oils. Soaps are sometimes superfatted in that they contain some free fatty acid. 

For use in soap bars, a smooth feel after washing, mildness, lime soap dispersing effect, and foaming properties are important [36,104-106]. In transparent soap bars the clarity will be improved [104], in half-syndet soaps mildness and foam are increasing [105,106] combined with a smooth feel after use [105], With lauryldiglycolamidether carboxylate a good foaming and mild syndet soap has been formulated [36]. 

Transparent soaps, 22 747-748 cast-mature process for, 22 749 Transparent thermal insulation,... 

Soaps that float m water are made by beating tiny air bubbles before their hardening. Transparent soaps are made by dissolving the soap in ethanol and then evaporating the excess solvent. 

Sassafras.—The bark of the laurtis sassafras, and is used in the form of tincture made by digesting it in alcohol. It also affords a volatile oil, but itB odor is not delicate., It. is employed for perfuming the coarser grades of transparent soap, and for admixture with other strong and common odors, to modify and improve their intensity. 

The temperature (in practice a narrow range of temperatures) above which the solubility of a surfactant increases sharply (micelles begin to be formed). Below the Krafft point only single, unassociated surfactant molecules (monomers) or ions (ionomers) can be present, up to a given solubility limit. Above the Krafft point, a solution can contain micelles and thus allow much more surfactant to remain in solution in preference to precipitating. In the soap industry the Krafft point is sometimes defined as the temperature at which a transparent soap solution becomes cloudy upon cooling. 

A. Kuntom, H. Kifli, and C. H. Oh, Transparent Soaps Derived from Palm Oil, ABISA Congress, Olindo, Brazil, 1992. 

Alcohol is one of the most important chemical products. We have already referred to it as a solvent, in which capacity it is of great service to the chemist in the laboratory as well as in industrial operations involved in the manufacture of transparent soap, varnishes, French polish, collodion, and celluloid. It is not only as a solvent, however, that it figures extensively in the arts and manufactures. It is used in the technical preparation of chloroform, iodoform, fulminates, ether, acetic acid, and many other bodies. For certain purposes—such as the production of some kinds of whiskey and brandy, and of liqueurs, and in the manufacture of scents, fine chemicals and drugs— only alcohol of a considerable degree of purity can be used, and the expense is correspondingly high. 

Soaps are colored by adding to them small amounts of copperas, ultra-marine, or other pigment. Transparent soaps are made by dissolving a common soap in alcohol and distilling off the latter from the decanted solution until the residue is obtained as a clear transparent jelly, which is finally carefully dried in moulds. The addition of glycerol and alcohol or a solution of cane sugar to cold-process soaps, renders them more or less transparent. 

Riplei Soap, or Almond Cireain.—French Slethod. —White Soft Toilet Soap.—Powdered Soape.—ShaTing Paste.—Eaaence of Soap.—Essence de Ton Vienne.—menoe de Baron Coiinthe.—Transparent Soap. 

Transparent Soap.—Soap, when perfectly dry, is readily soluble in warm alcohol and advantage is taken of this chemical fact in the manufacture of Transparent Soap perhaps the most elegant form which this substance is capable of assuming. 

It is well known that tallow and similar soaps, when dried, are freely soluble in alcohol, and that the solution, when eyaporated to expel the spirit, leayes the soap as a trami lucent mass, which, on cooling, forms the weU-known transparent soap. The same result may, howeyer, be obtained in a greater or lesser degree with some soaps prepared by the cold process this is especially the case with castor-oil soda soap, either by the addition of a little spirit of wine or glycerine. The some result may also obtained by mixing sugar or petroleum with the mass. 

Equipment for manufacturing transparent soap can have very different specifications where translucency is achieved by applying the right amount of mechanical work on the soap mass within a narrow range of temperature. The actual technology used to achieve translucency varies from manufacturer to manufacturer, but the principle of shearing/mechanical work that leads to phase transformation and translucency remains similar. Besides having extruded transparent soaps with... 

Kemper, H.C. and Sidebotham, R.R, Translucent and Transparent Soaps—Theory, Formulation and Processing, AOCS Meeting, October 1997. 

Transparent Soaps.—The production of transparent soaps has recently been fully studied, from a theoretical point of view, by... 

The old-fashioned transparent soap is prepared by dissolving, previously dried, genuine yellow soap in alcohol, and allowing the insoluble saline impurities to be deposited and removed. The alcoholic soap solution is then placed in a distillation apparatus, or the pan containing the solution is attached by means of a still head to a condenser, and the alcohol distilled, condensed and regained. The remaining liquid soap, which may be coloured and i>erfumed, is run into frames and allowed to solidify. 

Cheaper qualities of transparent soaps are made by the cold process with or without the aid of alcohol and castor oil, and with the assistance of glycerinci or cane-sugar. 

Transparent Soaps The early commercial transparent soap bars were based on conventional fat charges of tallow and coconut and also contained solubility enhancers such as potassium soap and rosin, in addition to glycerol and ethanol. These products were cast into molds and allowed to set and then stored for an extended period of time to allow the ethanol to evaporate. It is only after evaporation of the ethanol that transparency is achieved. This overall process can take several weeks and coupled with the alcohol evaporation is a slow and costly process. The best known product of this type still exists today and is sold by Unilever under the name Pears soap. ... 

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