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Does washing powder and soap have an acid-base reaction?

by:Jingliang     2023-06-04
Many people often wonder when washing clothes, which one is better for washing powder and soap, and whether it will be better if they are used together? There is a saying on the Internet that washing powder is acidic and soap is alkaline. When used together, an acid-base neutralization reaction will occur, and the washing effect will be cancelled. is this real? The following washing powder processing will talk about this problem. The main component of washing powder is sodium dodecyl benzene sulfonate, soap is a mixture of fatty acid metal salts, the number of carbon atoms is generally 10~18, and the metal is mainly sodium or potassium. The pH values ​​of both are between 9 and 10, and they are both alkaline. At the same time, the acid-base neutralization reaction will obviously not occur. However, the washing powder contains a foaming agent, whose function is to foam, stabilize the foam, penetrate and decontaminate, and resist hard water. A large amount of foam will be generated during cleaning, and the foam will increase the contact range between the washing powder and the clothes. If washing powder is used together with soap, the soap will reduce the foaming ability of the washing powder and reduce the cleaning efficiency. Washing powder is a cost-effective synthetic detergent, which has the advantages of strong detergency, good solubility, convenient application, resistance to hard water, and rich foam. At present, an enzyme has been added to the washing powder, which is an alkaline protease biocatalyst, which can remove stubborn protein dirt, such as blood stains, milk stains, grass stains, etc. The washing effect of washing powder in warm water is better than that in cold water, and the water temperature is preferably 30 ℃ to 60 ℃. If the washing powder is soaked in water above 60 ℃, the enzyme will lose its activity and affect the decontamination effect. Detergent is suitable for cleaning denim, heavy coats, curtains, etc. Washing powder is not suitable for washing wool, silk and other clothes. Because wool, silk and other clothes contain protein, alkaline washing powder will damage the clothes. If enzymatic washing powder is added, it will destroy the protein fiber structure of wool and silk clothes, causing damage to the clothes. The composition of laundry detergent is similar to that of washing powder, with low alkalinity, softer performance, no damage to clothes, suitable for washing underwear, bed sheets, etc. It has good water solubility and can be quickly dissolved in cold water to give full play to its effect. Low-foaming nonionic surfactants are often added to laundry detergents, making them easier to rinse. Laundry liquids generally use non-ionic surfactants that are resistant to hard water and are effective in both soft and hard water. Neutral silk and wool laundry detergent has low alkalinity and can wash delicate fabrics such as silk and wool.
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