Why does washing powder get hot when it comes into contact with water?

Why does washing powder get hot when it comes into contact with water? Washing powder contains a substance called sodium dihydrogen phosphate. When sodium dihydrogen phosphate is combined with water, some sodium hydroxide will be produced. Sodium hydroxide is commonly known as caustic soda. And with a greasy feel. Washing powder is an alkaline synthetic detergent, the main components are anionic surfactant, sodium alkyl benzene sulfonate, a small amount of non-ionic surfactant, plus some additives, phosphate, silicate, Yuanming powder , fluorescent agents, enzymes, etc., are made by mixing, dusting and other processes, and now most of them use 4A fluorspar instead of phosphate. The main components of washing powder are anionic surfactant, sodium alkyl benzene sulfonate, a small amount of non-ionic surfactant, plus some additives, phosphate, silicate, yuanming powder, fluorescent agent, enzyme, etc., after mixing , powder spraying and other processes, and now most of them use 4A fluorspar instead of phosphate. 1. In order to achieve a good decontamination effect, the washing powder should contain enough active ingredients. In order to ensure the washing effect of washing powder, the national competent authority has stipulated the low content of active ingredients in washing powder. According to the type of active agent used and the type of product, the amount of active ingredients in washing powder should generally not be less than 13%; 2. Because many surfactants have strong foaming ability, consumers can use experience to dissolve detergent from washing powder. Judging the pros and cons of washing powder based on the situation of foaming after water; 3. But some washing powders specially used for drum washing machines have much worse foaming ability than ordinary washing powders. This is because the drum washing machine mainly relies on the mechanical force generated by the tumbling of the clothes in the drum to achieve the purpose of washing the clothes; and too much foam in the washing solution will greatly weaken the mechanical force generated by the tumbling of the clothes. Makes the cleaning effect greatly reduced. Active ingredients are the ingredients that play a major role in detergents. Washing active ingredients are a class of substances called surfactants. Their function is to weaken the adhesion between stains and clothes. Under the action of mechanical forces such as washing water flow and hand rubbing or agitation of washing machines, the stains are released from the clothes. To achieve the purpose of washing clothes.
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