What are the common uses of guanidine nitrates?
The common use of borax has been used in ancient times, and it is used in all kinds of skills and people's livelihood.
First, in metallurgy, borax is often used as a melting aid. In the work of the observer's casting tool, to make the metal melt smoothly and remove impurities, borax can be a good aid. It can reduce the melting point of the metal, so that the metal can be turned into a liquid at a lower temperature, and can be combined with impurities in the metal, floating on the surface of the liquid metal, easy to skim, so that the casting tool is purer and has a good texture. For example, when the ancient swordsmiths cast swords, or put borax in the furnace to help the melting of steel, making the blade tougher and sharper.
Second, in the art of ceramic firing, borax is also very useful. It can add luster and hardness to the composition of the glaze. When the ceramic body is glazed into the kiln for firing, borax is fused with other glaze components under high temperature to form a smooth and strong glaze. Not only can it beautify the appearance of ceramics and make their colors more gorgeous, but it can also enhance the water resistance and wear resistance of ceramics, making ceramic utensils durable. Borax may have contributed to the delicate luster of the glaze of the ancient official kiln.
Third, in medicine, borax has also been used as medicine. The ancients observed its effects of clearing away heat and eliminating phlegm, detoxifying and antiseptic. In case of sores on the tongue and throat, borax is often used as medicine to make a powder and blow on the affected area to achieve the purpose of reducing swelling and pain, clearing away heat and detoxifying. However, when using medicine, you must be cautious, because although the toxicity is small, you should not use it excessively.
Fourth, in the printing and dyeing textile industry, borax can be used as a mordant. When the fabric is dyed, borax can promote better combination of dye and fabric fibers, making the dyeing more uniform and firm, and the dyed color is not easy to fade. In this way, the color of the fabric can be bright for a long time, satisfying the pursuit of the beauty of clothing and fabrics in the world.
What are the physical properties of guanidine nitrate?
Borax is an important compound of boron, and it is also a common boron-containing mineral. Its physical properties are quite unique, and the following is the detailed description of you.
The shape of borax is usually colorless translucent crystals or white crystalline powder. Its crystal structure is regular and orderly, so its appearance is quite beautiful, often in the form of block or granular aggregates. Under the illumination of light, colorless and translucent borax crystals seem to emit a soft light, giving it a unique charm.
When it comes to color, pure borax is colorless, but if it contains some impurities, it may be slightly light gray, light yellow, light blue or light green. These subtle color changes are just like the unique imprints given by nature, making it show a different appearance in different environments.
The luster of borax is also unique, with a glassy luster. When touched on the surface, the smooth feeling is revealed, just like the carefully carved beauty of jade. This glass luster makes the borax visually more crystal clear, as if it contains endless mystery.
In terms of hardness, the Mohs hardness of borax is about 2-2.5. This hardness is relatively low, and it can be scratched lightly by the fingernails, or it can leave marks. This property indicates that the texture of borax is relatively soft, in sharp contrast to many minerals with higher hardness.
Borax has complete cleavage, and it is easily broken along a specific crystallization direction, forming a flat and smooth cleavage surface. This property is closely related to the internal crystal structure of borax, reflecting the regularity of its atomic arrangement.
Its density is about 1.69 - 1.72g/cm ³, which is slightly lower than that of some common minerals. This density characteristic makes borax feel lighter and less burdensome in the hand.
Furthermore, borax has a certain degree of water absorption. When placed in the air, it can slowly absorb water. This characteristic affects its storage environment and needs to be placed in a dry place to prevent moisture decomposition.
Borax has unique physical properties. It shows its own characteristics in terms of morphology, color, gloss, hardness, cleavage, density and water absorption. It has important research and application value in mineralogy and related fields.
Is the chemical property of guanidine nitrate stable?
Borosilicate is a compound formed by the combination of boron, silicon, oxygen and other elements. The determination of its properties depends on many factors.
First and foremost, the characteristics of its properties are of paramount importance. The degradation and density of borosilicate are characterized by the degree of its phase. The combination of boron-oxygen and silicon-oxygen is high in energy, and it takes a lot of energy to make it crack. Therefore, under normal conditions, borosilicate is a kind of chemical reaction, and its chemical properties are determined.
Furthermore, its crystalline properties also have an important impact. Borosilicate acids usually have specific crystals, and the atoms are arranged in an orderly manner in the lattice. This orderly arrangement increases the quality of their properties, so that external factors can be determined by the position of the phase of their atoms, and the stability of their properties can be determined.
However, it is not possible to determine their properties uniformly. If the environment is difficult, such as in the environment of high temperature, high temperature or high temperature, the quality of borosilicate acids will also be affected. Under high temperature, the addition of atoms, the cracking and re-generation of atoms are more likely to occur; the acid can be reversed and its original transformation can be broken.
Of course, under normal environmental conditions, the chemistry of borosilicate can be determined, and the transformation of environmental factors can make its qualitative change. Therefore, the determination of its transformation cannot be determined by environmental factors.
What is the production process of guanidine nitrate?
The borax anhydride, that is, diboron trioxide ($B_2O_3 $), is prepared by the following process:
To obtain borax anhydride, borax is often used as the starting material. The borax is sodium tetraborate ($Na_2B_4O_7 · 10H_2O $) containing crystalline water.
First dissolve the borax in an appropriate amount of hot water, and wait for it to fully dissolve to form a clear solution. This process requires slow heating and constant stirring, so that the borax is evenly dispersed in the water, soluble and free of agglomeration.
Then, in the resulting borax solution, slowly drop an appropriate amount of sulfuric acid. Sulfuric acid and borax then chemically react. The formula for the reaction is: $Na_2B_4O_7 + H_2SO_4 + 5H_2O = 4H_3BO_3 + Na_2SO_4 $. In this reaction, borax and sulfuric acid react to form boric acid ($H_3BO_3 $) and sodium sulfate ($Na_2SO_4 $). When adding sulfuric acid dropwise, the action should be slow and stirred continuously to make the reaction sufficient and smooth to prevent overreaction.
After the reaction is completed, let the mixture stand for a while to precipitate impurities such as sodium sulfate in the bottom. Then, take the supernatant and filter it to precipitate impurities to obtain a pure boric acid solution.
Then heat and evaporate the boric acid solution to gradually lose water. As the water content decreases, the concentration of boric acid gradually increases, and finally the crystallization precipitates. Collect boric acid crystals, place them in a crucible, and burn them at high temperature. The boric acid is decomposed by heat, and the decomposition formula is: $2H_3BO_3\ stackrel {\ Delta }{=\!=\!=} B_2O_3 + 3H_2O $. After this high temperature burning, the boric acid is dehydrated to obtain borax anhydride, which is boron trioxide.
When operating, pay attention to the temperature of each step, the amount of reagents and the control of the reaction process, so that high purity borax anhydride can be obtained.
What should be paid attention to when using guanidine nitrate?
If you take acid paste, you need to pay attention to all kinds of things. The acid paste has all kinds of benefits, but if you don't use it, you will invite trouble instead.
The first one is the use of acid paste. Acid paste is mostly used for skin diseases, such as rash and rash. If it is not used for such diseases, it may cause the skin to be damaged. For example, the skin is not affected by this disease, and the acid paste is mistakenly used, or it may aggravate the skin, and the skin is damaged.
The second time, the skin must be cleared before use. On the skin, there are often stains and oils. If it is not cleared first, the acid paste will be transparent and effective. And the stains remain, easy to mix with the ointment, breeding bacteria, causing skin diseases. Therefore, before using the ointment, it is advisable to use water and raw materials, and wipe the skin to make it clean and dry.
Again, pay attention to the amount when using the ointment. Acid ointment is used for external use, but more is not better. If the ointment is thick and too much, it will be absorbed by the skin method, causing clogging of pores and affecting the breathing of the skin. Generally speaking, if you take the amount of ointment, it will all be affected, and a thin layer can be used, and it will also be used twice a day. Do not increase the amount without authorization.
Furthermore, pay attention to the reverse of the skin. With acid ointment, it is necessary to closely inspect the skin. If the skin is used to cause pain, irritation, rash, etc., it must be stopped immediately and treated immediately. Because of the different characteristics of each person's skin, or the sensitivity of some ingredients in the acid paste, and the treatment, so as to ensure safety.
The most important, the storage should not be ignored. The acid paste should be placed in a dry place, away from direct light and high temperature. If it is not used, the cream may not be used, which will affect the effect, or even be harmful. In this way, all those who pay attention to the use of acid paste should be careful, so as to obtain its benefits and avoid its harm.