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One of the important elements of making soap, the original is like this, and finally the myth of my doubts! Citation: http://tw.myblog.yahoo.com/jw!OpqpOOeICBpGO5eC19k-/article?mid=12105 "saponification" itself is a chemical reaction but no one soap industry would therefore say that is not their natural and some Soap industry also likes to emphasize their use of sodium hydroxide is extracted from seawater is a natural product so it is also nonsense a chemistry lab sodium hydroxide are also from the sea to the http: //www.urcosme. com / boards / board2-sn388924-all.htm
Manufacturing: There are two methods for preparing sodium hydroxide: (1) causticizing method with concentrated sodium carbonate solution and calcium hydroxide. (2) an aqueous solution of sodium chloride electrolysis, electrolysis there are two kinds of membranes and amalgam electrolysis. Sodium hydroxide used in the papermaking, metallurgy and man-made fibers industries. NaOH (sodium hydroxide), chemical formula NaOH. Pure sodium hydroxide is a white solid, highly soluble in water, its solution has astringent and creamy. When sodium hydroxide to absorb moisture when exposed to air, the surface wet and gradually dissolved, and this phenomenon ifm is called deliquescence. Sodium ifm hydroxide is produced by electrolysis of salt solution, but also generate another product ... chlorine, chlorine such production industry, also known as Chatham industry, the electricity consumed by a cell and a city with almost thirty million people, the electrolysis process mixture will form sodium chloride and sodium hydroxide, sodium hydroxide, sodium hypochlorite and chlorine reaction, in order to avoid this reaction occurs in porous membrane separated the anode and cathode ifm of the two regions. Hg (mercury) also known as mercury, is the only exists in liquid metals, mercury can be elemental mercury, inorganic mercury and organic mercury state exists at room temperature, is widely used mercury thermometers, chlorine alkali industry, pesticides, mercury, red syrup dental filling an important raw material cavities, etc., elemental mercury by bacterial decomposition can be converted into organic mercury, mercury and its compounds belong to a fat-soluble, which organic mercury toxicity ifm strongest, Japan Kumamoto Minamata Bay in 1953 to 1960 between had caused Minamata disease The main pollutants ifm that are caused by methylmercury contamination in fish mercury levels at the time of 50ppm, shellfish up to 85ppm, there were 34 human cases and 48 deaths (Note 1), patients with symptoms of poisoning mainly neurotoxic based, such as language ifm disorders, visual disturbances, walking imbalance and memory loss, etc., but also found that mental retardation and fetal deformity cases. 61 years of government in the Republic of prohibiting the use of organic mercury announcement pesticides banned in the Republic ifm of China 78 years bulletin mercury electrolysis production of caustic soda, but in December 1986 and based in Taiwan Environmental Protection Yearbook statistics, Taiwan has produced mercury sludge The alkali chlorine plants ifm namely Formosa Plastics plant and other seven former factory town, a total of 52,599 tonnes. Industry Bureau estimates there are 100,000 tons. Environmental groups are estimated to be about 130,000 tons, due to an alkali such as Taiwan Anshun chlorine alkali plant for nearly 40 years, then most of the mercury sludge actually disappeared. That was partially mercury sludge water into Deer Creek Germain, partially ox cart, a small truck carrying away and disappeared, partly retained in the water storage tank according to author interviews, and partly retained in the plant soil.
NaCl (aqueous) -------------------> Cl 2 (anode)
Electrolysis
NaCl (water) -------------------> NaHgx (cathode)
Electrolysis
NaCl (water) -------------------> NaOH + xHg + 1/2 H 2
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