Can ordinary soap wash underwear?

Generally speaking, soap is alkaline chemically, but the alkalinity of each bar is different. Some soaps have low alkalinity, while others have high alkalinity. The PH value of soap is about 8- 1 1. You can observe its ingredients before buying.

In addition, there are many kinds of soaps, such as underwear soap, hand soap, laundry soap, hand sanitizer, soap and so on. These soaps are alkaline, but each soap has different functions and different pertinence.

Soap is a necessity in people's daily life. Its main raw materials are oil and alkali. Auxiliary materials include spices, pigments, medicinal materials, salt, and some stuffing and water? Soap is the main detergent and an important raw material for textile industry, metal processing industry and medicine.

Is soap acidic or alkaline?

Soap is now neutral, alkaline and acidic. Generally speaking, soap for washing clothes is alkaline, and alkaline soap has strong detergency. Neutral soap is less irritating to human skin, and acid soap has poor detergency, but it has certain skin care effect.

There are many kinds of soap, which can be roughly divided into alkali metal soap and metal soap. Alkaline soap can be dissolved in water, that is, ordinary laundry soap and soap. Metal soap is insoluble in water and can only be used as industrial soap.

Washing principle of soap

Most of the dirt comes from dust in the air, soot, mineral oil, various animal and vegetable oils, and fat sweat secreted by the human body. These substances are mixed together and attached to human body and clothes, forming dirt.

Most of the dirt is insoluble in water, so it is difficult to wash it with clean water. Only soap can wash it off. Because after soap is dissolved in water, due to the movement of soap molecules in water, it forms obvious surface activity and adsorption performance, thus permeating between dirt, sludge and clothes, squeezing dirt out of fabric fibers and becoming tiny droplets. These droplets emulsified by soap solution exist in the solution. Due to the emulsification of soap, dirt can be prevented from gathering and redeposition on the fabric. Therefore, after rubbing and foaming, the dirt will be surrounded by the foam adsorption layer of soap, and will be washed away with the foam after rinsing, thus achieving the purpose of removing the dirt.