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Laundry soap is a bar or bar hard soap, the main component is fatty acid sodium salt, in addition, laundry soap also contains builders, fillers, etc. Such as Paohua alkali, sodium carbonate, zeolite, colorants, transparent agents, calcium soap dispersants, fragrances, optical brighteners, etc. Laundry soaps are alkaline detergents, and their aqueous solutions are alkaline. Its detergency is strong, the foam is moderate, and the trial is convenient. The disadvantage is that it is not resistant to hard water, and soap scum will be generated when washing in hard water. Laundry soap is a traditional laundry product. It is a fatty acid sodium salt generated by a series of reactions between animal fat or vegetable fat and caustic soda. It is a typical anionic surfactant. Domestic enterprises mainly focus on the process of boiling soap in a large pot; internationally, two processes are mainly popular: oil hydrolysis-fatty acid continuous neutralization and continuous saponification. Most of my country's soap-making enterprises are located in Shanghai, Guangdong, Fujian and other places, and their raw material palm oil is mainly from Southeast Asian countries such as Malaysia and Indonesia. By adding optical brighteners, it is especially good for washing white fabrics, and the appearance is white and refreshing, which is more and more recognized by consumers.