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A soap substitute is a natural or synthetic cleaning product used in place of soap or other detergents, typically to reduce environmental impact or health harms or provide other benefits. Traditionally, soap has been made from animal or plant derived fats and has been used by humans for cleaning purposes for several thousand years. [ 1 ]
Antibacterial soap is a soap which contains chemical ingredients that purportedly assist in killing bacteria. [1] The majority of antibacterial soaps contain triclosan , though other chemical additives are also common. [ 2 ]
Quillaia is used in the manufacture of food additives. [1] The extract also is used as a humectant in baked goods, frozen dairy products, and puddings and as a foaming agent in soft drinks. [1] It is used in agriculture for some "natural" spray adjuvant formulations. [2]
Total fatty matter (TFM) is one of the most important characteristics describing the quality of soap and is always specified in commercial transactions. It is defined as the total amount of fatty matter, mostly fatty acids, that can be separated from a sample after splitting with a mineral acid, usually hydrochloric acid.
It is also the main component of soap scum, a white solid that forms when soap is mixed with hard water. Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well. [2] Commercially it is sold as a 50% dispersion in water or as a spray dried powder.
Having the characteristics of soaps, sodium stearate has both hydrophilic and hydrophobic parts, a carboxylate and a long hydrocarbon chain. These two chemically different components induce the formation of micelles, which present the hydrophilic heads outwards and their hydrophobic (hydrocarbon) tails inwards, providing a lipophilic environment for hydrophobic compounds.
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