Regarding the shelf life and expiration date of washing powder, can it be used?

In daily life, many people choose to use washing powder to wash clothes. Laundry powder has a certain shelf life, so how long is the shelf life of laundry detergent? Can expired laundry detergent be used? The following washing powder processing manufacturers will answer for you. 1. How long is the shelf life of washing powder? Laundry powder also has a shelf life. According to my country's recommended standards, under the specified storage conditions, washing powder can be stored for two years or more from the date of production, and the shelf life may not be indicated, but the production date must be included. And some washing powder with special ingredients added, if the service life is less than two years, the expiration date must be marked. The main component of washing powder is anionic surfactant: sodium alkylbenzene sulfonate, a small amount of nonionic surfactant, plus some additives, phosphate, silicate, sodium sulfate, fluorescent agent, enzyme, etc., after mixing , powder spraying and other processes, and now most of them use 4A fluorspar instead of phosphate. Laundry powder will only absorb moisture and agglomerate after a few years, and will not affect the washing effect. But enzyme detergent is different, the protease inside (the little green dots in enzyme detergent) is active. After a year and a half, the enzyme gradually loses its activity and cannot decompose sweat and blood, but other washing functions will not be affected. 2. Can expired washing powder be used? Can. The main ingredients of washing powder are: surfactant (sodium p-dodecylbenzenesulfonate is commonly used), water softener (sodium tripolyphosphate is commonly used), alkali agent (soda ash and silicic acid are commonly used Sodium), bleaching agent (some washing powder uses sodium borate as bleaching agent), enzyme (mainly a compound enzyme composed of protease, lipase, cellulase, etc.), fluorescent whitening agent, carboxymethyl cellulose (acting Anti-redeposition effect), flavors, pigments, fillers (mainly sodium sulfate, which acts as a filler and makes the product look a lot) among them, surfactants, enzymes, carboxymethyl cellulose, etc. are all active substances, which last for a long time It will react with the air and deteriorate and decompose, thus losing the effect of washing and decontamination. Some ingredients in expired detergent can also decompose some stains, but the decontamination effect has been greatly reduced, and the denatured detergent components may damage clothes. , so generally speaking, it is not suitable to continue to use expired laundry detergent. Of course there is no harm, but the decontamination ability is much worse.

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