Soap is a kind of carboxylic acid sodium salt, R - CO2Na, the R group is different from the general, is all sorts of hydrocarbon.R - is abhorred water-based, carboxyl is hydrophilic group.In hard water, soap and Ca2 +, formed the curd shape materials such as magnesium 2 +, fatty acid calcium salt and so on, which says "calcium soap and become useless scale remover.Will join the rest of the hard water softener can remove hard water ions, make the soap.
We now use the soap from the pot boil out of the factory.Soap plant pot filled with butter, lard, or coconut oil, then add caustic soda (sodium hydroxide or sodium carbonate) boil them with fire.Oil and sodium hydroxide chemical changes occur, the soap and glycerin.Because soap is not dissolved in concentrated brine, and glycerin solubility in the salt water is very big, so you can use to add salt to separate soap and glycerin.Therefore, when cook for a period of time, pour some salt powder, a thick layer of pot surfaced sticky paste.Model with scraping board put it to the soap box, cooling after forging pieces of soap.Soap and soap is the same as the general, just added some disinfectant.