What are the main uses of guanidine carbonate?
In the past, there were many reasons for the use of borax acid.
First, in metallurgy, borax acid is often used to help melt. In ancient smelting, if you want to make the gold stone melt quickly, and to improve the quality of it, borax acid cannot be used. For example, in the manufacture of cauldrons, the amount of borax acid invested can reduce the melting of the stone, making it easier to flow, and the quality of the utensils is also better. This is because it can react to the gold oxide to form fusible boron glass, which makes the gold alloy, so the metallurgy is good.
Second, in the manufacture of ceramics, borax acid is also very useful. The color of ceramics is often enhanced by borax acid. It can be made of the swelling system of ceramic billets, so that the billets are not easy to crack and shape, and can change the melting degree of ceramics, so that the glaze surface is smoother and brighter. The ancient craftsmanship, well aware of the wonders of borax acid, used it to enter the glaze, so there are beautiful and beautiful ceramic treasures in the world, or like your sky green, or like Jingde blue and white, all have the power of borax acid.
Third, in the realm of, borax acid also has a place. Those who used it in ancient times knew that it has the effect of clearing and detoxifying, and regenerating muscles. External use can treat mouth and tongue, sore throat and other diseases. Apply boraxic acid to the affected skin, which can reduce bacteria and reduce inflammation and promote the healing of the mouth. Nowadays, new methods are being used, but boraxic acid is still effective in some medical and external applications.
Fourth, in daily life, boraxic acid is also often used. For example, washing clothes in ancient times, or using materials containing boraxic acid, can help decontaminate and make clothes more durable. And it also has a certain effect on the preservation of food, which can delay the decay of food for a while. However, due to the consideration of its toxicity, this use has been reduced.
What are the physical and chemical properties of guanidine carbonate?
Boraxic anhydride, that is, diboron trioxide ($B_2O_3 $), its physical and chemical properties are as follows:
1. Physical properties
1. ** Morphology **: Usually colorless glassy crystals or powders. In ancient books, it can be described as "pure and transparent in color, like the end of glaze, or a crystal clear body". In the context of "Tiangong Kaiwu", it should be expressed in concise and figurative language.
2. ** Odor and taste **: odorless and tasteless. Just like the ancient books said "odor is airless, taste is tasteless", because of its stable nature, there are no special volatile substances and soluble ingredients to produce taste.
3. ** Density and hardness **: The density is about 2.46 dollars g/cm ^ 3 $, the hardness is low, and the Mohs hardness is about 3-4. According to the ancient saying, its quality is not strong, and the specific gravity is moderate. "Its weight is normal, and its hardness is inferior to that of gold and stone".
4. ** Melting point and boiling point **: The melting point is about 450 dollars ^ {\ circ} C $, and the boiling point is about 1860 dollars ^ {\ circ} C $. In the words of ancient books, "When heated, it is easy to melt, and when the fire reaches 400 or 500 degrees, it will turn into liquid; when calcined with strong fire, the gas above 800 degrees will disperse and boil".
5. ** Solubility **: Slightly soluble in cold water, easily soluble in hot water. As the ancients remembered "In cold water, there is little dissolution; immersed in hot water, instant dissolution". Due to the increase in temperature, the molecular movement intensifies, which is more conducive to the interaction between $B_2O_3 $and water molecules.
Second, chemical properties
1. ** acidity and alkalinity **: It is an acidic oxide, which can react with alkali to form borate. If it reacts with sodium hydroxide: $B_2O_3 + 2OH Na= 2NaBO_2 + H_2O $. In ancient words, "Borax anhydride reacts with alkali and converts into salt and water, which is a sign of acidity".
2. ** Reacts with water **: Reacts slowly with water to form boric acid. $B_2O_3 + 3H_2O = 2H_3BO_3 $. Ancient books or "put it in water for a little longer, and gradually change to produce boric acid".
3. ** Reaction with metal oxides **: At high temperatures, it can react with a variety of metal oxides to produce borate glass with characteristic colors. If it reacts with copper oxide, it can produce blue borate glass. If this phenomenon was observed in ancient times, when it was noted that "borax anhydride co-melts with metal oxides, and when the fire reaches a high temperature, a colored glassy substance is obtained. If it is combined with copper oxides, the color is dull blue".
What is the production process of guanidine carbonate?
The production process of lanthanum alfate is related to the preparation of materials, reaction handling, and product processing.
When preparing materials, it is necessary to carefully select the raw materials. To make lanthanum alfate, lanthanum compounds such as lanthanum nitrate and alum compounds such as ammonium alfate are commonly used. These two need to be of high purity, with some impurities, which may disturb the subsequent reaction and bad product quality. Select the raw materials and weigh them accurately according to the stoichiometric ratio. The ratio is slightly poor, or the product is impure, or the reaction is difficult to achieve the expected.
The reaction management is very critical. It is often done by solution chemistry. The weighed lanthanum nitrate and ammonium alfate are dissolved in an appropriate amount of solvent, such as deionized water, in turn. Stir to make it fully dissolved and form a uniform mixture. This step requires controlling the temperature and stirring rate. Too high or too low temperature, too fast or too slow stirring may affect the dissolution effect and mixing uniformity. Then, slowly heat up to promote the solution to react. The heating rate should also be appropriate. If it is too fast, the reaction will be violent and difficult to control, and if it is too slow, it will take too long. During the reaction, pay close attention to the change of the solution. When the precipitation is formed, continue to stir and keep warm for a period of time to make the reaction complete.
The product treatment should not be underestimated. After the reaction is completed, a mixed solution containing lanthanum alfate precipitation is obtained. First, the precipitation is separated from the mother liquor by filtration. The filter material is selected as an appropriate one to ensure that the precipitation is not lost and the mother liquor is removed. After that, use an appropriate amount of washing liquid, such as a mixture of alcohol and water, to wash the precipitation multiple times to remove impurities on the surface. The number of washes and the amount of washing liquid need to be considered. If there are few impurities, it will be difficult to clean, and if there are many, the product will be lost. After washing, the precipitation will be placed in an oven, the temperature and time will be controlled, and the moisture will be dried. Finally, high temperature calcination may be required to improve the crystallinity and purity of the product. The calcination temperature and time will be fine-tuned according to the needs of the product.
What are the precautions for guanidine carbonate in storage and transportation?
For borax anhydride, many matters need to be paid attention to during storage and transportation.
Borax anhydride is active and prone to change in case of moisture. Therefore, when storing, it must be placed in a dry and well-ventilated place to prevent moisture from causing it to deteriorate. In the warehouse, the humidity should be strictly controlled and not too high, so as not to affect its quality. If placed in a humid place, borax anhydride may be phased with water vapor, and its properties will change and its effectiveness will be reduced.
In addition, borax anhydride should be avoided in storage with various easily reactive substances. Substances such as strong acids and strong alkalis should not be co-located with them. Due to the chemical properties of the cover, when encountering such substances, it is very easy to cause violent reactions, or cause dangers such as combustion and explosion, which endangers the safety of storage. Therefore, it is very important to store them in a classified and organized manner.
As for transportation, the packaging must be sturdy and reliable. Appropriate packaging materials need to be selected to ensure that borax anhydride is not damaged or leaked during the bumpy transfer. On the outer package, its characteristics and warning labels should also be clearly marked, so that the transporter can clearly understand its danger and handle it with caution.
During transportation, temperature control cannot be ignored. Borax anhydride is quite sensitive to temperature, and either too high or too low temperature may affect its stability. Therefore, a suitable transportation environment should be created according to its characteristics to ensure its quality. And transportation vehicles should be checked regularly to ensure that there is no leakage and a safe journey. In this way, the storage and transportation of borax anhydride can be appropriate and avoid disasters.
What are the advantages of guanidine carbonate compared to other similar products?
First of all, its natural quality. The mussel acid is taken from the natural mussel, which is cultivated in the moon, and is not added by artificial. It is like a clear spring in the mountains, undyed, and it is right and reassuring to use. If it is not a good product, or more methods of chemical synthesis, it can be completed quickly, but it often contains chemical transformation and retention, and the use may affect the health of the body.
The second is its outstanding effect. The mussel acid has a miraculous effect on the balance of human acids. The health of the human body, the sum of the environment, the balance of the acid. In addition, mussel acid can be used as a good hand, and it can be used to make the acid in balance. Compared with other similar products, or the effect is not good, or it can be treated without curing the root cause. Mussel acid can be used as a fundamental force, so that the body can be restored to normal, and it can also be used for diseases caused by acid imbalance.
Furthermore, its nature is peaceful, and it can cause severe side effects. It is similar to a product, or because the ingredients are too strong, it is easy to have side effects. Otherwise, mussel acid is soft in nature, like spring rain, and it is harmful to the body. It can be used by men, women and children of all ages, and it can be used in a short period of time. It is also safe and reliable.
And its use. It can not be used for daily health care, such as body acid; it can also be used to help treat general diseases, such as stomach problems, skin diseases, etc. This is beyond the reach of other similar products. For other purposes, it can be used in a certain area, and muslin acid, such as muslin acid, can be used for multiple health benefits.
Of course, muslin acid is outstanding among other similar products because of its natural, efficient, peaceful and multi-purpose properties, which is the best in health care.