What are the main application fields of guanidine hydrochloride
The main application fields of borax borate are metallurgy, chemical industry, medicine, agriculture, etc.
In the field of metallurgy, borax has a wide range of uses. Gu Yun: "Borax enters the fire, and the color is eliminated, and it can melt hardware." It is often used as a flux in metallurgy. Because borax is melted by heat, it can combine with the oxides on the metal surface to form a fusible borate, which can reduce the melting point of the metal and make the metal more mobile, which helps the casting process. During welding, borax can remove impurities on the metal surface, making the welding more firm.
In the chemical industry, borax is also an important raw material. Such as boron compounds, such as boric acid, sodium borohydride, etc., all rely on borax as the starting material. "Borax converts water, through various reactions, boric acid can be obtained." Boric acid has many uses, in the glass industry, it can increase the thermal stability and transparency of glass; in the enamel industry, it can improve the performance of enamel.
In the field of medicine, borax also has its uses. It has the effect of clearing away heat and detoxifying, reducing swelling and antiseptic. In the past, borax was often used as medicine to treat swelling and pain in the throat and mouth. "Borax is applied to the affected area to relieve swelling and pain." In modern medicine, borax-containing agents are also used for disinfection of the mouth and skin.
In agriculture, borax can be used as a trace element fertilizer. " Boron, although used in small amounts, is indispensable for crop growth. "Boron can promote the development of reproductive organs of crops and increase the resistance of crops. Appropriate application of borax can increase the seed setting rate of crops and make the fruits fuller.
What are the chemical properties of guanidine hydrochloride?
Borax boric acid has unique chemical properties. Borax is a sodium salt of borate containing crystalline water, its color is white, and it is in the state of crystal or powder. At room temperature, its properties are quite stable, and when it encounters strong acid, it reacts to form boric acid. Its aqueous solution is alkaline, which is caused by the hydrolysis of borax. During hydrolysis, borate ions combine with hydrogen ions in water, so that the concentration of hydroxide ions increases, and it becomes alkaline.
Boric acid is a white crystalline powder or a colorless scale with a slight pearl luster. Its acidity is extremely weak, and it is partially ionized in water. It can form a coordination compound with polyols, which enhances its acidity. Boric acid will gradually dehydrate when heated, forming metaboric acid first, and then becoming boron trioxide.
Borax boric acid is closely related, and borax can be acidified to produce boric acid. In many fields, both are important. Borax is often used in the glass and ceramic industries to increase its heat resistance and transparency; in the metallurgical industry, it can be used as a flux. Boric acid is often used as a disinfectant and preservative in the field of medicine; in agriculture, it can be used as a trace element fertilizer to help plants grow. Looking at its chemical properties, the alkalinity of borax and the weak acidity and special reaction characteristics of boric acid are the basis for its wide application in various industries. It is a unique chemical substance.
How to safely store guanidine hydrochloride
If you want to store glutamic acid, you should follow the ancient law, prepare all things, and do all things carefully.
First find a secluded and dry place to avoid sun dryness and moisture. This is the foundation of hiding things. If the place is not suitable, the things are perishable. The place should be thick and the window should be small, which can resist external evil, and the air flow is not sudden.
Prepare a cabinet of solid wood, or a pottery urn. The wooden cabinet must be coated with tung oil and dried in the shade several times to make it dense and impervious to moisture; the pottery urn should be selected with a dense texture, sewn with paper paste, then wrapped with hemp, and coated with mud, waiting for it to coagulate.
Place the glutamic acid in a clean cloth bag, which should be thick and soft, and can be separated from temperature and humidity. When entering the cabinet, the bottom of the urn is covered with dry leaves, layer by layer. The leaves are dry, can absorb moisture, and protect the quality of the glutamic acid.
It takes time to observe. Every ten days, open the cabinet and look at it. If you see that the package has moisturizing gas, change the dry cloth quickly; the leaves are wet. In the hot season, it is easy to look at it carefully, because it is wet and steaming, and things are changeable.
The good one who hides, the glutamic acid can last for a long time and the quality remains unchanged. When used, its effectiveness is as good as ever, and it can be used for various purposes. This method of Tibetan glutamic acid acyl cannot be ignored. If you follow it, you will get the wonders of safe storage.
What is the preparation method of guanidine hydrochloride in industrial production?
The production of borax is very crucial in the way of industrial production. The method of borax preparation, about several ends, let me tell you one by one.
One is the carbonic alkali method. Choose boron-magnesium ore powder, mix it with sodium carbonate solution, and put it in a reactor. Stir at an appropriate temperature, usually between 150 and 200 degrees Celsius. During this process, boron-magnesium ore reacts with sodium carbonate, magnesium ions gradually precipitate, and boron is dissolved in the solution. After this reaction, the solution is filtered to remove its impurities, and then the filtrate is cooled and crystallized to obtain borax crystals. The chemical reaction formula is roughly: $2MgO\ cdot B_ {2} O_ {3} + Na_ {2} CO_ {3} + 2H_ {2} O\ longrightarrow 2NaBO_ {2} + 2MgCO_ {3}\ cdot 3H_ {2} O\ downarrow $, then $4NaBO_ {2} + CO_ {2} + 10H_ {2} O\ longrightarrow {2} B_ {4} O_ {7}\ cdot 10H_ {2} O + Na_ {2} CO_ {3} $.
The second is the sulfuric acid method. First take the boron magnesium ore powder and mix it with sulfuric acid. This reaction requires temperature control, about 80 to 90 degrees Celsius. Sulfuric acid reacts violently with boron-magnesium ore. Boron is then dissolved in the form of boric acid, and magnesium is formed into magnesium sulfate. After the reaction is completed, the residue is filtered and removed to obtain a solution containing boric acid. Next, the solution is concentrated and the boric acid is gradually precipitated. Then, the boric acid solution is neutralized with sodium carbonate to make boron again into borax. The reaction also has its formula, such as $2MgO\ cdot B_ {2} O_ {3} + 2H_ {2} SO_ {4} + H_ {2} O\ longrightarrow 2H_ {3} BO_ {3} + 2MgSO_ {4} $, $4H_ {3} BO_ {3} + Na_ {2} CO_ {3}\ longrightarrow Na_ {2} B_ {4} O_ {7} + 6H_ {2} O + CO_ {2}\ uparrow $.
The third is the extraction method of salt lake brine. In the brine rich in boron, the concentration of boron and other elements in the brine is gradually increased by evaporation and concentration. Then the boron element is separated from other impurities by means of chemical precipitation or ion exchange. Boron is adsorbed by ion exchange resin, and then eluted with eluent to obtain a high-concentration boron solution. After evaporation and crystallization, borax is obtained. This way depends on the composition of salt lake brine, and the details may vary, but it is necessary to enrich and separate boron.
These various production methods have their own strengths and weaknesses. In industrial production, it is necessary to carefully choose the best method for preparing borax according to the abundance of raw materials, the level of cost, and the quality of the product.
What are the effects of guanidine hydrochloride on the environment?
The acid of Ju is involved in the environment, and the matter is different. The acid of Ju is involved in the planting of Ju. This plant is mostly born in the land of Ju, at the foot of the forest. The acid produced by it has a special nature, but it is also in the surrounding environment, and it affects each other.
The acid of Ju is dissolved in the soil. Its roots enter the soil, and it is divided, and it is also secreted in the soil. In the past, the nature of the soil has been reduced. Its acid may shift the acid balance of the soil. If the soil is too weak, it will be neutralized when it encounters this acid. The community of microorganisms in the soil is also changed accordingly. Beneficial bacteria may multiply due to the stimulation of acid, and harmful bacteria may be inhibited. This is all due to the microenvironment of the soil.
Even when it comes to water, it is also affected by it. The acid of Ju Ju, or dissolved in water, causes the water to be damaged. If its acid enters the stream, it will be damaged by the flow, and the aquatic life will be affected. If there is a problem, it is sensitive to acid, and the degree of acidity is slightly lower, its movement and reproduction are restricted. Algae in water is also different due to the shadow of acid. Whether it is promoted to flourish or decay, it depends on the amount of acid.
Furthermore, when it is empty, the acid of the water will enter the water directly, but the replacement of the plant, or the food, will be connected to the composition of the air. The taste of its acid is scattered around, leading to the sparrow. This is where the sour fragrance is, until it is too late, and this is where the food is. The bird eats, gathered because of acid, and the raw materials are interlocked.
The acid of the water, the shadow of the environment, is not one can be observed, not one can be completed. Its impact is in the water and soil, and the co-generation of the two things is a subtle part of nature.