Soap, drawing

Soap Draw the structure of the soap sodium palmitate (pahnitate is the conjugate base of the 16-carbon saturated fatty acid, palmitic acid). Label its polar and nonpolar ends. 

Clean thoroughly in alkaline solution to remove all shop soils, soap drawing compounds, and identification inks. If coated with heavy oil, grease, or other petroleum-based compounds, parts may be degreased in trichloroethylene before alkaline cleaning. Degreasing will not be harmful to the part in subsequent... 

Compare and contrast the electrostatic potential map of a typical detergent with that of a typical soap (stearate). Which part of each molecule will be most water soluble (hydrophilic) Draw a Lewis structure that describes each molecule s water-soluble group (make sure you indicate all necessary formal charges and lone pairs). Which part(s) of each molecule will be most grease soluble (lipophilic) What kinds of atoms and bonds are found in these groups ... 

In order to ensure uniform drawing temperatures and avoid excessive wear on the dies and mandrels used, it is essential that a suitable lubricant be applied during drawing. A wide variety of lubricants are used for this purpose. Heavier draws may require oil-based lubricants, but oil-in-water emulsions are used for many applications. Soap solutions may also be used for some of the lighter draws. Drawing oils are usually recycled until their lubricating properties are exhausted. 

Drawing with emulsions or soaps Continuous rod casting... 

Eight of the 266 plants in the aluminum forming industry draw aluminum products using oil-in-water emulsions and three use soap solutions as drawing lubricants. These solutions are frequently recycled and discharged periodically after their lubrication properties are exhausted. Table 5.8 summarizes the classical and toxic pollutant data for the drawing with emulsions subcategory. 

Summary of Pollutant Data for fhe Drawing Oil Emulsion-Soap Subcategory Verification Data... 

NATIONAL (cont.) Drawing with emulsions of soaps... 

Use the Laplace equation to calculate the spherical radius of the soap film which is formed by the contact of two bubbles with radii of 1 and 3 cm. Assume that the soap bubbles have a surface tension of 30 mj m . Draw a sketch of the contacting bubbles to help you. 

Cetyl alcohol, C16H33OH, is a common ingredient of soaps and shampoos. It was once commonly obtained from whale oil, which is where it gets its name cetylis derived from cetacean). Draw the chemical structure for this compound. 

Ordinary soap is a mixture of the sodium or potassium salts of long-chain carboxylic acids that arise from saponification of animal fat. Draw the structures of soap molecules produced in the following reaction ... 

The decrease in the size of soap bubbles caused by air diffusion has been observed by some researchers [480]. Manegold et. al. [480] have determined gas permeability of bubble films with a diameter of 5 cm produced from a 2% Nekal solution and filled with hydrogen and carbon dioxide. These experiments can hardly be used to draw any definite conclusions on the effect of adsorption layer on the rate of diffusion transfer. 

The first systematic study of the various properties of soap films has been conducted by the Belgian scientist Plateau. Using the findings from investigations on the structure and properties of differently shaped films, he was the first to draw attention to that part of the film which contacts the surface holding the film. It came to be called Plateau border. Plateau studied the impact of various external effects (like the stream of air, evaporation, etc.) on the behaviour of... 

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