What is soap made of

Soap is a direct agent.Soap for senior fatty acid (including the number of carbon atoms at 15 or more) of sodium or potassium, by fatty acid with sodium hydroxide or potassium hydroxide by saponification.Such as stearic acid made from sodium hydroxide or potassium hydroxide by saponification soap.Equation is as follows: c17h35cooh + naoh - c17h35coona + h2o stearic acid sodium hydroxide stearic acid sodium salt (sodium) soap water c17h35cooh + koh - c17h35cook + h2o stearic acid potassium hydroxide potassium stearate soap (k) water 1. Soap for different purposes of, can be divided into a lot of kinds, usually have a hard soap and soft soap.Hard soap is composed of fatty acid and sodium hydroxide (burn) made by saponification, say again so sodium soap.Soft soap is made from fatty acid and potassium hydroxide by saponification, say again so potash soap, used to make up.Is commonly used in the printing and dyeing, sodium soap so mentioned in this section is limited to sodium soap.2. Single for sodium soap, due to the difference of the fatty acids used, also there are many.Its raw materials with stearic acid, also namely animal fats, such as butter, fat, their chemical structure of saturated fatty acids.Some with palmitic acid, roughly by preparing vegetable oils, such as palm oil, olive oil, for unsaturated fatty acids.City on the normal supply of soap, and generally made from stearic acid, are available for use on scouring, dyeing, printing and dyeing post-treatment;The quality of the soft soap grease is higher, generally used in textile finishing.

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