What are the common uses of guanidine hydrochloride?
For those who are humble and sour, there are three ways they are often used. First, there are five flavors. The world is well aware of the use of sour food. For those who are sour, they can remove the fishy smell, such as vinegar into the water, the fishy smell will disappear, and the beautiful taste will diffuse in the water. For those who are sour, they can melt the ingredients. If they are fluffy and put into the surface, the surface will be smooth, and the taste will be better. And the sour phase can make the taste of the dishes rich again and again, sweet and sour, and different, such as the harmony of the chapter, which makes people happy.
Second, the treatment of diseases at home is also the principle of sour food. The human body is like the balance of acid. Acid is sick, and it is also sick. Those who are sour with the acid of stone, and the people. For example, if there is a lot of stomach acid, it should be made with an acidic material to neutralize stomach acid and relieve the pain of epigastric pain; if it is biased, use an acidic material to balance. This is the way to treat the body and mind, and to seek the health of the body and mind.
Third, the work is all related to acid. The potter makes pottery, the fire is the fire, and the acid is the influence of the pottery. The suitable acid environment can make the pottery color rough and the ground hard. Dyeing by dyeing, acid can help the dye adhere, and the color is bright and long-lasting. There are also metallurgical materials, acid is used to extract the material, remove it, and leave its essence, so that the gold degree can be improved. It is used in equipment, which is solid and durable.
Where this is the case, the use of acid is not related to food, roads, and industrial fields, and it is necessary to observe the people's livelihood.
What are the physical properties of guanidine hydrochloride?
Borax boric acid anhydride, its physical properties can be studied. Borax is a crystalline hydrate of sodium borate, commonly known as borax decahydrate, which is colorless and translucent crystalline, or white powder, which is soft and smooth to the touch. It can be slowly weathered in the air, and when it is hot, it loses water to form anhydrous borax, which is a white glassy substance.
Boric acid anhydride, that is, boron trioxide, is a colorless glassy solid under normal conditions. Its melting point is quite high, about 1275 ° C, and its boiling point is also high, up to about 2500 ° C. This substance has good heat resistance and certain hygroscopicity. It gradually combines with water to form boric acid.
Borax can be hydrolyzed in water, and its aqueous solution is weakly alkaline. Although boric acid anhydride is insoluble in cold water, it can be soluble in hot water and reacts with alkali energy to form borate. Both borax and boric acid anhydride are widely used in industry and scientific research. Borax is often used in glass and ceramic industries to increase its luster and strength; in metallurgical industry, it can be used as a flux. Boric acid anhydride is indispensable in refractory materials, electronics industry and other fields. It can be used as a raw material for manufacturing optical glass and heat-resistant glass to improve the performance of glass.
Is the chemical property of guanidine hydrochloride stable?
Borax boric acid, its chemical properties are stable? Borax is the common name of sodium tetraborate, boric acid, that is, H 🥰 BO 🥰 also. Borax is relatively stable, usually colorless translucent crystals or white crystalline powder, which gradually loses crystalline water in dry air and weathers. Its aqueous solution is alkaline, and boric acid is formed when exposed to acid.
The stability of boric acid is also considerable. Under normal conditions, it is white powder-like crystals or triangular scales-like crystals, with a slippery feel and no odor. The solubility of boric acid in water increases with the increase of temperature. Its acidity is very weak, but it can also neutralize with strong bases.
The chemical properties of borax and boric acid are still stable under many conditions. However, in the case of strong oxidizing agents, strong acids and other specific chemical substances, chemical reactions will also occur to change their original forms and properties. If borax encounters strong acid, it will be transformed into boric acid; boric acid will also undergo reactions such as decomposition under extreme conditions such as high temperature. Therefore, its stability cannot be generalized to be absolutely stable when it depends on the specific environment and the substances encountered. Although the two can maintain a relatively stable state in the usual environment and general chemical reaction scenarios, under special chemical conditions, their stability will change.
How to store guanidine hydrochloride safely?
The method of hiding arsenic is related to safety and cannot be careless. Arsenic is a highly toxic thing. If you hide it wrong, it will harm the living beings.
If you want to safely hide arsenic, the first heavy container. Choose solid and airtight utensils, such as pottery urns, porcelain bottles, etc., which are dense in quality and can prevent arsenic from leaking and evaporating. And it is appropriate to add a logo on the outside of the utensil. Warning words such as the book "Highly poisonous arsenic, do not touch it lightly" make people aware of the danger at a glance and avoid it.
The choice of hiding is very important. You should seek dry, cool and inaccessible places, such as remote warehouses and deep cellars. Drying can prevent arsenic from being deteriorated by moisture and causing accidents; shade can slow down its chemical changes and ensure its stability. If people are rare, the risk of accidental contact can be reduced.
In addition, the place where arsenic is hidden should not be similar to food and water sources. Arsenic is highly toxic. If it accidentally contaminates drinking water, it will definitely cause disaster. And no flammable or explosive objects should be placed around to prevent accidental explosion and fire, which will spread arsenic and multiply the scope of poisoning.
It is necessary to check the place where arsenic is hidden on a daily basis, depending on whether the container is damaged and whether the label is clear. If there is any abnormality, dispose of it promptly and properly. Or replace the container, or re-label the warning.
The possession of arsenic must be done with caution and in accordance with the above laws, so as to ensure the safety of one party and prevent the harm of the poison from affecting everyone.
What are the applications of guanidine hydrochloride in synthetic reactions?
Borax boric acid is used in synthetic reactions and involves a wide range of applications.
In the field of metallurgy, borax can be used as a flux. Because it can reduce the melting point of metal oxides, impurities and metals can be separated more easily, thereby improving metal purity. For example, in ancient sword casting, borax is cast in the furnace to help remove impurities in iron, and the cast sword is tougher and sharper.
In glass manufacturing, both borax and boric acid have important functions. Borax can increase the thermal stability and chemical stability of glass, making glass more resistant to sudden temperature changes and chemical attack. Boric acid can adjust the refractive index and hardness of glass, making glass products more beautiful and durable. In the past, borax and boric acid were indispensable when firing exquisite glazes. The glazes made were colorful and strong in texture.
Borax boric acid is also commonly used in the enamel industry. Borax can be used as a flux for enamel glazes to make the glaze evenly cover the metal surface, and improve the luster and wear resistance of the glaze. Boric acid can improve the chemical stability of enamel and prevent it from being eroded by acid and alkali. Ancient enamel utensils, treated with borax boric acid, are durable and not easy to damage.
In the field of medicine, borax and boric acid are also used. Boric acid dilute solution has the effect of disinfection and anti-corrosion, and can be used to clean wounds, mucous membranes, etc., to prevent infection. Borax can reduce phlegm and cough when taken internally, and detoxify and reduce swelling when used externally. Ancient physicians have recognized the medicinal uses of these two substances to treat diseases.
Furthermore, in agricultural production, borax boric acid can be used as a trace element fertilizer. Boron is essential for plant growth and development, can promote pollen germination and pollen tube elongation, improve fruit setting rate, and also help plants absorb and transport calcium. Although ancient farming lacks modern accurate understanding, experience has shown that appropriate application of boron-containing substances may increase crop yields.