7-Hydroxy-8-(Phenylazo)-1,3-Naphthalenedisulphonicacid,Disodiumsalt

Arsenic, its main component is arsenic trioxide, highly toxic, is the most poisonous thing in the world. Lead pill, that is, lead tetroxide, although slightly less toxic than arsenic, should not be underestimated. As for borax, the main ingredient is sodium tetraborate, which is also toxic.
These three were occasionally used in medicine, alchemy and other fields in ancient times. In medicine, although arsenic is highly toxic, it has been specially processed. In some diseases, it may be able to fight poison with poison, such as scabies, syphilis, and sores. Doctors may use it cautiously. Lead pill in traditional Chinese medicine can be used externally to detoxify and produce muscle, and taken internally to calm phlegm, but if the dosage is slightly careless, it is easy to be poisoned. Borax is often used to clear away heat and detoxify, reduce swelling and preservative, and has an effect on swelling and pain in the throat, sores in the mouth and tongue, etc.
In alchemy techniques, these three are also often regarded as important raw materials by alchemists. They try to use their special properties to refine the so-called elixir that can prolong life and become immortals. However, due to insufficient awareness of its toxicity, many emperors and nobles not only failed to live long after taking elixirs containing such poisons, but instead died of poisoning.
In daily life, because of its strong toxicity, it must not be easily touched. If eaten by mistake, it will endanger life. Even in industrial use, extreme caution is required when using and strict follow the operating procedures to prevent poisoning accidents.

The physicochemical properties of mercury dipotassium disulfate are very important. Alum, both compounds containing specific elements, have unique properties.
Its physical properties, often crystalline, white or with a little color, crystal shape regular, with a certain luster. The texture is relatively solid, but also fragile. It is solid at room temperature, with a moderate density, and its morphology can be clearly observed in a specific container.
In terms of its chemical properties, mercury dipotassium disulfate has a certain stability. In case of specific chemical reagents, it will also react. In case of strong acids, it may decompose and release specific gases or ions. In the redox reaction system, it can be used as an oxidizing agent or a reducing agent, depending on the environment and the substances it reacts with. And in its aqueous solution or molten state, it can conduct electricity, which is due to ionization of ions. It can also undergo double decomposition reaction with many metal ions to form new compound precipitation, which is widely used in chemical analysis and synthesis. Under heating conditions, there will be decomposition phenomenon, and the decomposition products vary according to temperature and environment.
Therefore, the physical and chemical properties of potassium mercury alum disulfate are complex and diverse, and it is of important value in many fields. It is also an indispensable substance for chemical research and practical applications.

Alum, that is, alum, is quite common in many uses.
When storing disodium thiodisulfonate, you need to pay attention to various things. First, be careful about its environment. This substance should be stored in a dry place, because moisture is prone to deliquescence. If it deliquesces, its properties may change, affecting its use. And it must be kept away from water sources to prevent it from dissolving in water and losing its original quality.
Second, a place to avoid high temperature. Under high temperature, disodium thiodisulfonate may undergo chemical changes, causing its composition to change and its effectiveness to decrease. Therefore, choose a cool place to keep it stable.
Third, prevent mixing with other things. This substance has unique chemical properties. If it comes into contact with unsuitable things or reacts chemically, it will cause it to deteriorate in the light, or be dangerous in the serious. Therefore, it should be stored separately and clearly marked, so that the user can understand it and not make mistakes.
Fourth, storage containers are also exquisite. It is advisable to choose chemically stable containers, such as specific glass bottles or plastic containers, to avoid the reaction between the container and the disodium sulfide salt, so as to preserve its quality and preserve its storage. In this way, the disodium sulfide salt must be properly preserved so that it can be used to the best of its ability when needed.

In "Tiangong Kaiwu", the process of gallium amalgam, boron (amalgam oxide) and antimony to make tartar (potassium antimony tartrate) is very delicate, and it involves many steps and techniques.
The first is the preparation of materials, and the selection of high-quality tartaric acid is selected. Its color is pure and good, and there is no impurity and no dirt. It is the foundation for making this product. The selection of antimony is also very important. It is necessary to obtain fine antimony with very few impurities to ensure the quality of the finished product.
The second is the reaction operation. In the clean kettle, tartaric acid and antimony are injected according to the precise ratio. The control of the heat is extremely critical. The initial heat is slow, so that the two slowly blend. The material in the kettle gradually changes, and the color changes slightly. Then the fire becomes more and more fierce, urging it to react quickly. At this time, you need to keep your eyes on it, observe the reaction situation, and never tolerate the difference pool.
In addition, it is purified and refined, and the reaction is completed to obtain a crude product, which contains impurities, and needs to be further purified. It is dissolved in a specific solvent and has been filtered and crystallized many times to remove the barren and store the cyanine. When filtering, the filter material is fine to prevent the leakage of fine impurities; when crystallizing, the temperature and time are fixed, so that the crystal is perfectly precipitated and pure and flawless.
After going through these various processes, you can get the finished product of wine spitting stone. Its crystal shape is regular and its color is radiant. It has extraordinary functions in many fields such as medicine. This process condenses the wisdom of the ancients, is a model of chemical preparation in later generations, and is also a treasure of

"Tiangong Kaiwu" contains: Alum, its types are different, alum, green alum, bile alum, etc. are all common alum. Green alum, that is, ferrous sulfate crystals, has many uses in industry, agriculture, medicine and other fields. However, this substance will also have an impact on the environment.
If green alum decomposes or loses in the natural environment, the iron and other substances it contains enter the water body, which will cause the water body to change color, increase the concentration of iron ions, affect the water quality, or make the water body rust-colored, changing the physical properties of the water body. And changes in the concentration of metal ions in the water body may have toxic effects on aquatic organisms, interfere with their normal physiological metabolism and growth and reproduction, and destroy the water ecological balance.
Furthermore, if green alum accumulates in the soil, or changes the pH of the soil, it will cause soil acidification. Soil acidification will affect the availability of nutrients in the soil, reduce soil fertility, make it difficult for plants to absorb enough nutrients, hinder plant growth and development, and in severe cases, it can cause vegetation degradation and affect the stability of terrestrial ecosystems.
And bile alum, that is, copper sulfate crystals, is toxic. If it enters the environment, it is quite harmful to animals and plants. In the aquatic environment, it will poison aquatic organisms such as fish, affect their normal functions such as nervous system and respiratory system, and cause their death. In soil, it will inhibit the activity of soil microorganisms, affect the decomposition of organic matter in the soil and nutrient cycling, and then affect the material cycle and energy flow of the entire ecosystem.
As for mirabilite, that is, sodium sulfate crystals, although its toxicity is relatively small, it enters the environment in large quantities, or changes the salt content of the soil, causing soil salinization. Soil salinization will cause soil compaction, poor aeration and water permeability, and is not conducive to plant root growth and water absorption. It will also have a negative impact on the ecological environment, resulting in reduced vegetation coverage, affecting ecosystem stability and biodiversity.