How to study the ingredients of laundry detergent, the ingredients of laundry detergent Introduction

There are five categories of ingredients in laundry detergent: active ingredients, washing aids, cushioning ingredients, synergistic ingredients, and auxiliary ingredients. The main ingredients are:

fabric fiber antiscalants, anionic surfactants, nonionic surfactants, water softeners, dirt suspensions, enzymes, fluorescent agents and fragrances, etc.; Poor laundry detergents often contain harmful ingredients such as phosphorus, aluminum, and alkali. The role of surfactant in laundry detergent is to make laundry detergent soluble, emulsify, soak, clean, sterilize, soften, foam, and prevent static electricity of clothes. Synthetic surfactants have long been found to make hands thicker***, and now they are regarded as a major public nuisance to the environment.

In addition, phosphorus, aluminum alkali, especially phosphorus has been banned in some developed countries in laundry detergent, but many chemical plants in China are still producing this kind of products, especially some foreign-funded enterprises, and then their own local products can not have these harmful substances, and in China, it is the law is not perfect, people's environmental awareness is not strong, boldly add these harmful substances.

Active ingredient. The active ingredient is the ingredient that plays a major role in the detergent. The active ingredient is a class of substances called surfactants, which weakens the adhesion between the stain and the laundry, and causes the stain to be removed from the laundry under the action of mechanical forces such as the flow of washing water and the agitation of the hand rubbing or washing machine, so as to achieve the purpose of washing the laundry.

Note: 1. In order to achieve a good decontamination effect, the laundry detergent should contain enough active ingredients. In order to ensure the washing effect of laundry detergents, the competent national authorities have set a minimum level of active ingredients in laundry detergents.

Depending on the type of active agent used and the type of product, the amount of active ingredients in laundry detergent should generally not be less than 13%; 2. Because many surfactants have a strong foaming ability, consumers can judge the quality of laundry detergent based on experience from the situation of foaming after the laundry detergent is dissolved in water; 3. However, some laundry detergents dedicated to drum washing machines have much worse foaming capacity than ordinary laundry detergents. 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. Excessive foam in the washing solution will greatly weaken the mechanical force generated by the tumbling of the laundry, which will greatly reduce the washing effect.

Wash-aid ingredients.

This is not something that ordinary families or even ordinary chemical laboratories can do. As said on the third floor, the use of professional instruments, such as meteorological chromatographs, etc., can only be roughly qualitative. It is not very easy to completely quantify the proportion of ingredients.

When buying laundry detergent, there is its ingredients on the packaging itself, if you want to study further, then do some chemical experiments according to the ingredients on it, and you can see the further reaction Generally written on the bag.

Unknown components can be studied with chromatographs, but this project can only be done by more authoritative institutions, and the detection cost is very high, if it is a known component, it can be detected by quantitative analysis.

Do you know chemistry, do you understand chemical composition, this is an experimental question, go back to school and ask your chemistry teacher.

There are five main components of laundry detergent, namely: active ingredients, detergents, buffering ingredients, synergistic ingredients, and auxiliary ingredients. Among them, detergent is the most used ingredient in laundry detergent. Each ingredient has a different role to play when washing clothes.

Washing powder. After the 40s of the 20th century, with the development of the chemical industry, people used the chemical substance extracted from petroleum - sodium tetrapolypropylene benzene sulfonate to make detergents with better performance than soap.

Because laundry detergent can show good decontamination effect in various water qualities such as well water, river water, tap water, spring water, and even seawater, its production and use have developed rapidly.

At present, there are three main types of laundry detergents on the market, ordinary laundry detergent and concentrated laundry detergent, phosphorus-containing laundry detergent and phosphorus-free laundry detergent, enzyme laundry detergent and flavored laundry detergent.

1. The main ingredient of laundry detergent is anionic surfactant, sodium alkylbenzene sulfonate, a small amount of nonionic surfactant, plus some additives, phosphate, silicate, yuanming powder, fluorescent agent, enzyme, etc., which are made by mixing, spraying powder and other processes, and now most of them use 4A fluorite instead of phosphate. Laundry detergent refers to a synthetic detergent in powder form (granular).

2. Laundry detergent is an alkaline synthetic detergent, which is a chemical agent used to wash clothes.

1. The main ingredients of laundry detergent are anionic surfactant, sodium alkyl benzene sulfonate, a small amount of nonionic surfactant, plus some additives, phosphate, silicate, Yuanming first powder, fluorescent, enzyme, etc., which are made by mixing, spraying and other processes.

2. The English of laundry detergent is washingpowder, and the synthetic detergent is based on surfactant as the main ingredient, and is equipped with an appropriate amount of detergent with different effects of chain celery. Laundry detergent refers to a synthetic detergent in powder form (granular).