When it comes to tannin powder
tannin powder, it has considerable properties, uses, and production.

Let's talk about its properties first. Tannin powder, the color may be light brown, and the texture is delicate like dust. The taste is astringent, placed between the tongue, the astringent meaning spreads quickly, and its touch is soft, and it can quietly slip between the palms of the fingers. It has the property of convergence, dissolves gradually in contact with water, and the solution after dissolution is slightly viscous. It is slightly light yellow in appearance, with a certain transparency, but it is not as clear as water. Its chemical properties are relatively active, and it is easy to combine with metal ions. When it encounters iron, the color changes, and it changes from light to dark. This is the peculiarity of its properties.

As for the use of tannin powder, it is quite extensive. In the textile industry, it can be used as a mordant. The fabric is treated with tannin powder, and the dye is closely combined with it, the color fastness is greatly increased, the color is bright and long-lasting, and it will not fade for a long time. In the art of leather tanning, tannin powder is also indispensable. It can penetrate deep into the leather fibers, making it flexible and wear-resistant, and the leather surface is smooth and flat, which not only enhances the durability of leather, but also enhances its appearance. In the field of medicine, it also has its merits. Because of its astringent properties, it can be used to stop bleeding and prevent diarrhea. Applied externally to wounds, it can help coagulation and prevent infection; taken internally, it can slow down the smooth intestines and stop diarrhea.

Furthermore, in terms of its production. Its source is mostly taken from plants. The bark, fruit and leaves of many trees contain tannins. Such as the bark of oak, it is rich in tannins. After taking the skin, it is chopped and soaked to dissolve the tannins in water. Then, by filtration, impurities are removed and the liquid is retained. After evaporation and concentration, the solution is gradually thickened, and finally the tannin powder is obtained. The production process needs to be carefully controlled. Temperature and humidity, as well as the length of time, are all related to the quality of the tannin powder. If the temperature is too high, the tannin may decompose and deteriorate; if the time is improper, the extraction is impure, which affects its subsequent use.

To sum up, tannin powder has specific properties and is widely used. It also has its own production methods. It plays an important role in many industries.