What are the chemical properties of 1,2-benzisoxazole-3-methanesulfonic acid, sodium salt?
"Tiangong Kaiwu" says: "Mercury, silver and lead coexist, and its gas is mixed with the gas of earth and stone. Mercury is not stone or gold, and its properties are very spiritual." Mercury, that is, mercury, is a unique chemical substance, and its chemical properties are particularly wonderful.
Mercury has the property of being liquid at room temperature, which is unique among metals. Its fluidity is excellent, like a smart silver liquid, which can slide freely on the surface of objects. And the melting point of mercury is extremely low, only -38.87 ° C, and the boiling point is only 356.6 ° C. This property makes it prone to physical state changes when the temperature changes.
Mercury has a high chemical activity. Although it is relatively stable at room temperature, it will show a lively side when exposed to heat or a specific chemical environment. Mercury can form alloys with many metals, such alloys are called amalgams. If it encounters sodium, it can quickly form sodium amalgam, which is often accompanied by heat release.
Mercury can also react with oxygen. When heated, mercury will combine with oxygen to form red mercury oxide. And mercury has a strong affinity for sulfur. When the two meet, it is easy to combine into mercury sulfide, which is often used in the treatment of mercury leakage.
In addition, mercury compounds have various properties. Such as mercury chloride, it is highly toxic and has good solubility; mercury sulfide is brightly colored and is often used as a pigment.
Mercury has unique chemical properties and has been valued by the Fang family in ancient times for use in alchemy and other techniques. However, due to its toxicity, extra caution is required when using it to avoid endangering life and health.
1,2-Benzisoxazole-3-methanesulfonic acid, what are the uses of sodium salts?
"Tiangong Kaiwu" has a saying: Lead pill, also known as yellow pill, is an oxide of lead. Lead pill has a wide range of uses and has its own effects in many fields.
First, in the field of traditional Chinese medicine, lead pill can be used as medicine. It has the effect of detoxifying, muscle-building, falling phlegm and calming shock. In case of ulceration of sores and long-term failure to close the mouth, lead pill can be applied to help develop muscles and reduce sores. However, it is poisonous, and it needs to be carefully processed when used as medicine, and the dose should be strictly controlled to avoid poisoning.
Second, lead pill is also used in alchemy. Ancient alchemists often used lead pill as one of the raw materials for alchemy. In the process of alchemy, lead pills participate in various chemical reactions in the hope of refining the so-called "elixir", which is mostly based on the ancient people's imagination of immortality, and many "elixir" are harmful to health due to toxic ingredients such as lead.
Third, lead pills have their uses in industry. Can be used as a pigment, because of its bright and long-lasting color, it is often used in painting, ceramic color decoration, etc. For example, in traditional painting pigments, lead pills are unique in color and can add color to paintings. When ceramic is fired, coated with lead pills can make the ceramic surface show a different color and texture.
Fourth, lead pills also played a certain role in the manufacture of ancient firearms. It can be used as one of the ingredients in the gunpowder formula to adjust the performance of gunpowder and improve the firing power and stability of firearms.
However, it needs to be understood that lead Dan is toxic, and it needs to be prevented and properly handled when using it. With the development of the times and the progress of science and technology, many safer and environmentally friendly alternatives have emerged, but lead Dan has played an indelible role in the long history.
What is the synthesis method of 1,2-benzisoxazole-3-methanesulfonic acid, sodium salt?
To prepare benzyl malonate, the method is as follows:
Take 1,2-bromoisoxazole first, which is the key starting material. React 1,2-bromoisoxazole with suitable reagents, and through a series of delicate transformations, an intermediate containing a specific structure can be obtained.
Then, for this intermediate, a specific method is used. A suitable catalyst can be selected to interact with benzyl alcohol under appropriate reaction conditions. When reacting, it is necessary to pay attention to many factors such as temperature and pressure to ensure the smooth progress of the reaction.
At the same time, the reaction process should be carefully monitored, and the degree of reaction and product purity should be known by means such as chromatographic analysis. If there are by-products in the reaction, it should be separated and purified to increase the yield of the target product.
During the whole synthesis process, the purity of the raw material is quite high, and too many impurities can easily cause reaction deviation and affect the quality of the product. And after each step of reaction, the product needs to be properly handled and identified to confirm that its structure and purity are correct before it can be used in the next reaction. In this way, after several steps of careful operation and control, benzyl malonate is finally obtained.
What is the market price range for 1,2-benzisoxazole-3-methanesulfonic acid, sodium salt?
"Tiangong Kaiwu" states that alum is a general term for a variety of minerals, among which copper alum is bile alum, which has special properties. Copper alum is in the market, and its price varies from time to time and from place to place.
In ancient times, copper alum was mostly derived from nature, and it was not easy to mine. In addition, the refining technology was limited, so its price was high. In the prosperous Kyoto city of Dayi, materials are gathered, and transactions are frequent. However, the supply of goods may be scarce, and the price can reach several dollars of silver per catty. In remote places, traffic is blocked, transportation is difficult, and copper alum is fresh, and the price may be higher.
In times of war, people's livelihood is difficult, all industries wither, mining is damaged, copper alum production is sharply reduced, and it is difficult to find a trace in the market. Prices are also like a runaway horse, soaring all the way.
In times of peace, the mining industry is gradually booming, the process is improved, and the output of copper alum is slightly increased, and the price may drop. Near the place of origin, due to abundant supply, the price is only a few copper coins per catty.
In general, the price of copper alum per catty in the city can range from a few copper coins to a few silver coins. Between fluctuations, it is affected by many factors such as supply and demand, current situation, and origin. It is difficult to determine an exact price.
What is the safety of 1,2-benzisoxazole-3-methanesulfonic acid, sodium salt?
Nowadays, there is alum stone, and its safety is related to people's livelihood, which cannot be ignored. Alum stone, the chemical name is aluminum potassium sulfate, is widely used in daily life and industry.
In terms of its toxicity, small doses of alum stone can be taken internally, which can spit wind and phlegm, but too much can be harmful. Because of its aluminum content, the human body consumes too much, and it is difficult to metabolize and excrete it in time. Aluminum accumulates in the body, which can damage the nervous system, cause memory loss, cognitive impairment, and is like a candle in the mind. And it will affect bone health, interfere with calcium absorption, and make bones fragile, such as rotten wood. Long-term intake may even increase the risk of dementia and osteoporosis.
Looking at its application scenarios, in food processing, it is often used as a leavening agent and coagulant. If added when frying fritters, it can make the fritters expand and crispy; when used in making tofu, it can help the soy juice solidify into tofu. However, this application must be cautious, because improper use can easily cause food aluminum to exceed the standard. In the field of water purification, the hydrolysis of aluminium hydroxide produces an aluminum hydroxide colloid, which can absorb suspended impurities in water and make the water clear. However, if it is put in too much, the residual aluminum in the water will be harmful to human consumption.
As for how to ensure its safety, the first thing is to standardize its use. The food industry should strictly abide by national standards, precisely control the amount of aluminium added, and do not act recklessly for the Regulators need to strengthen supervision, with strict regulations and high-frequency inspections, to prevent illegal additions. Furthermore, research and development of alternatives is also a good policy. With technological advancements, safer substances should be found to replace some uses of alum stone, such as new aluminum-free leavening agents for food processing. At the same time, it is also crucial to popularize knowledge, so that the public can know the characteristics and hazards of alum stone, and be more cautious in daily diet consumption, so as to ensure the safety of alum stone use, avoid its harm and use its benefits.