What's the difference between white soap and yellow soap for washing clothes?

Washing clothes with different colors of soap will not change the color of clothes.

White soap and yellow soap are mainly composed of sodium stearate, and the color difference is due to the addition of different synthetic pigments, synthetic fragrances, preservatives, antioxidants, foaming agents, hardeners, tackifiers and synthetic surfactants. The difference between the two:

1, the color is different.

Ordinary laundry soap is light yellow and transparent, while white soap is white and opaque.

2. The additives are different.

Commonly used yellow laundry soap is usually mixed with rosin, which is added in the form of sodium salt to increase the solubility and foaming of soap, and it is also cheaper as a filler.

White laundry soap is added with sodium carbonate and sodium silicate (the content can reach 12%), and the water content of general laundry soap is about 30%. If the white laundry soap is dried and sliced, you can get soap chips, which can be used to wash high-grade fabrics.

It is normal for soap to crack. Soap should be kept in a dry place.

Because bacteria especially like to appear on soap that becomes sticky because it is wet with water. As long as you do some simple actions, you can avoid the harm caused by bacteria to soap, such as washing it with tap water before using soap; Store soap in a dry place, especially not in a wet bathtub. A dry environment can ensure that bacteria cannot reproduce.

Extended data:

According to different fatty acids, laundry soap can be divided into type I and type II, with the content of type I dry sodium soap ≥ 54% and type II dry sodium soap between 43% and 54%. From the functional point of view, laundry soap can be divided into ordinary transparent laundry soap, whitening laundry soap, plant laundry soap and bactericidal laundry soap. Strictly speaking, only bactericidal laundry soap has the function of killing germs.

Therefore, if you want to achieve sterilization effect when washing clothes, you can choose laundry soap marked with sterilization laundry soap to wash clothes.

Matters needing attention in choosing laundry soap:

1, don't blindly believe the contents in the advertisement of laundry soap/liquid detergent.

2. Choose laundry soap or liquid detergent suitable for clothing materials.

3. Don't buy the "three noes" laundry soap/liquid detergent cheaply.

4. For environmental protection, please try to buy bagged laundry detergent instead of bottled laundry detergent.

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Baidu encyclopedia-soap