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Sigma KEE - Soap
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肥皂
Soap is a Surfactant Cleaning mixture used for personal or minor cleaning. It usually comes in solid moulded form. In the developed world, synthetic detergents have superseded soap as a laundry aid. Many soaps are mixtures of sodium or potassium salts of fatty acids which can be derived from oils or fats by reacting them with an alkali (such as sodium or potassium hydroxide) at 80-100 degrees Celsius in a process known as saponification. (from Wikipedia)
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Parents 表面活性劑 Surfactants, also known as Wetting agents, lower the surface tension of a Liquid, allowing easier spreading. The term surfactant is a compression of 'Surface active agent'. Surfactants are usually organic compounds that contain both hydrophobic and hydrophilic groups, and are thus semi-soluble in both organic and aqueous solvents.


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