Soap Is A General Term For Fatty Acid Metal Salts.
Apr 05, 2022
Soap is a general term for fatty acid metal salts. The general formula is RCOOM, where RCOO is a fatty acid radical, and M is a metal ion. The carbon number of fatty acids in daily soaps is generally 10-18, the metals are mainly alkali metals such as sodium or potassium, and ammonia and some organic bases such as ethanolamine and triethanolamine are also used to make special-purpose soaps. In a broad sense, fatty acid salts obtained by saponification or neutralization of oils, waxes, rosin or fatty acids with alkalis can be called soaps. Soap is soluble in water and has the effect of washing and decontamination. There are various types of soap, also known as toilet soap, metal soap and compound soap.
Soap is a general term for fatty acid metal salts. The carbon number of fatty acids in daily soaps is generally 10-18. The metals are mainly alkali metals such as sodium or potassium. They are also made of ammonia and some organic bases such as ethanolamine and triethanolamine for special purposes. soapy. Soap includes laundry soap, toilet soap, metal soap, liquid soap, and related products fatty acid, hardened oil, glycerin, etc.
Ingredients of soap: sodium salt R-CO2Na of carboxylic acid, synthetic coloring, synthetic fragrance, preservative, antioxidant, foaming agent, hardener, viscous agent, synthetic surfactant.
The main component of soap is R-CO2Na, (sodium stearate (C17H35COONa)), in which R groups are generally different and are various hydrocarbon groups. R- is a hydrophobic group, and a carboxyl group is a hydrophilic group. In hard water, soap and Ca2+, Mg2+, etc. form curd-like substances, fatty acid calcium salts, etc., which are commonly called "calcium soaps" and become useless descaling agents. Adding softeners to hard water removes the hard water ions, allowing the soap to work. Medicated soap is mainly in which some disinfectants are added. Fragrance is added to the soap. Soap has strong degreasing power due to its soap base.
