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Soaps and Soap Manufacturing Process | Industrial and Domestic Soap Production and Manufacturing Process

Soap Manufacturing Process

Soaps are from the class of surface-active agents or surfactants. Where the surface properties play the role of water-like and dislike ability of the compound. A compound that shows attractiveness towards the water and dissolves in it is called a hydrophilic compound and the opposite action of which the compound repels water and does not dissolve but stays separately forming another layer and may dissolve organic compounds is called hydrophobic. By using this mechanism a surfactant is a molecule that has these two compounds as head and tail and acts like a link binder between the water and dirt or oil.

 Soaps are chemical compounds of the type R.COO.M where the part “R.COO” is fatty acid radical representing oleic, stearic, palmitic, lauric, and myristic. These are usually present in soaps as a mixture based on glyceride raw materials. ‘M’ is an alkali element such as Na or K. 

Types of the soap manufacturing process:

1. Batch saponification process:
 The most famous Twirchell process is where acid hydrolysis of glycerides is done along with alkali addition, or even by direct saponification using concentrated caustic. This process is used for small-scale and domestic-level production

 2. Continuous Hydrolysis and Saponification Process: This is followed for industrial large-scale production.

Chemical Reactions:

 Fat splitting:

 (R.COO)3.C3H5 + 3H2O à 3R.COO.H + C3H5(OH)3


 R.COO.H + M.OH à R.COO.M + H2O

 Where M is mostly alkali earth metal Na and K

Commonly used fatty acids 

Raw materials: Soaps are derived from triglycerides, a compound having three ester-linked fatty oils and alkali earth metal hydroxides like caustic soda or potassium hydroxide. The fatty acid molecule present in the oil is the main part of starting material.
Process flow sheet:

Continuous process for fatty acids, soap, and glycerin

General Consideration of Raw Materials in Soap Making Process

Soaps are manufactured from fatty acids and oil for a variety of soap products

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Aanchal Gupta

Welcome to my website! I'm Aanchal Gupta, an expert in Electrical Technology, and I'm excited to share my knowledge and insights with you. With a strong educational background and practical experience, I aim to provide valuable information and solutions related to the field of electrical engineering. I hold a Bachelor of Engineering (BE) degree in Electrical Engineering, which has equipped me with a solid foundation in the principles and applications of electrical technology. Throughout my academic journey, I focused on developing a deep understanding of various electrical systems, circuits, and power distribution networks.

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