sodium or potassium salts of heavier fatty acids are called soaps.
sodium or potassium salts of heavier fatty acids are called soaps.
sodium or potassium salts of heavier fatty acids are called?
soaps
potash is primarily a mixture of potassium salts because plants have little or no sodium content, and the rest of a plant's major mineral content consists of calcium salts of relatively low solubility in water. while potash has been used since ancient times, it was not understood for most of its history to be a fundamentally different substance from sodium mineral salts. georg ernst stahl obtained experimental evidence that led him to suggest the fundamental difference of sodium and potassium salts in 1702, and henri louis duhamel du monceau was able to prove this difference in 1736. the exact chemical composition of potassium and sodium compounds, and the status as chemical element of potassium and sodium, was not known then, and thus antoine lavoisier did not include the alkali in his list of chemical elements in 1789. for a long time the only significant applications for potash were the production of glass, bleach, soap and gunpowder as potassium nitrate. potassium soaps from animal fats and vegetable oils were especially prized because they tend to be more water-soluble and of softer texture, and are therefore known as soft soaps. the discovery by justus liebig in 1840 that potassium is a necessary element for plants and that most types of soil lack potassium caused a steep rise in demand for potassium salts. wood-ash from fir trees was initially used as a potassium salt source for fertilizer, but, with the discovery in 1868 of mineral deposits containing potassium chloride near staßfurt, germany, the production of potassium-containing fertilizers began at an industrial scale. other potash deposits were discovered, and by the 1960s canada became the dominant producer.
potassium
fatty acids with an odd number of carbon atoms are called odd-chain fatty acids, whereas the rest are even-chain fatty acids. the difference is relevant to gluconeogenesis.









































section::::nomenclature.:naming of fatty acids.









































the following table describes the most common systems of naming fatty acids.









































section::::nomenclature.:free fatty acids.









































when circulating in the plasma (plasma fatty acids) are not in their ester, fatty acids are known as non-esterified fatty acids (nefas) or free fatty acids (ffas). ffas are always bound to a transport protein, such as albumin.









































section::::production.









































section::::production.:industrial.
fatty acid