Knowledge inventory to explain the role of sodium carbonate in laundry detergent formula products? What are its characteristics?

What is the role of sodium carbonate in laundry detergent formulations? What are its characteristics? As early as more than 100 years ago, the basic components of all laundry detergent formula products except soap are sodium hydroxide, sodium carbonate and sodium silicate, etc. These alkaline components alone account for more than the technical products of laundry detergent. Its important functions are: one is to make stains and fibers have more negative charges when the pH value increases, thereby increasing the repulsion between stains and fibers, the second is to accumulate hardness ions in water, and the third is to saponify grease. Until the very beginning, alkaline builders were an important ingredient in industrial laundry detergent formulations. Sodium carbonate belongs to the accumulation type water softener. Insoluble salts are easily deposited on substrates and washing machines, especially cotton fabrics, which feel very rough after washing and lack the necessary evacuation and peptization effects. Therefore, it is not suitable as a washing powder adjuvant alone, and must be assisted by other adjuvants. Sodium bicarbonate does not soften water, its role is to make laundry detergent alkaline. Some alkaline substances have the buffering effect of PH value. This buffering effect makes the washing powder liquid remain alkaline and can only be decontaminated. Among them, sodium carbonate and sodium silicate are still very good buffers. It is necessary to add 6501 to penetrate the ingredients, so that the detergent technology product can enhance its decontamination function
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