Quinoline-8-Sulfonic Acid

The sugar cube is a cube-shaped sugar cube made from sugar cane juice, beet juice, etc. The gypsum is mainly composed of calcium sulfate hydrate, which is commonly found in ores. Sugar cubes and gypsum have significant differences in properties and uses.
Sugar cubes, their main use is in seasoning. In tea drinks, adding sugar cubes can sweeten the tea and make the tea taste more mellow. Whether it is green tea with a fragrance, rich black tea, or milk tea with a creamy aroma, sugar cubes can enhance its flavor just right. Adding sugar cubes to coffee can neutralize the bitterness of coffee and give coffee a unique sweet taste, so that coffee lovers can enjoy it to the fullest. When making desserts, sugar cubes are also an indispensable raw material. In the process of baking cakes, cookies and other desserts, sugar cubes can not only add sweetness to desserts, but also make their color more attractive and texture softer.
And plaster is quite widely used. In the field of construction, plaster of delta can be quickly solidified and hardened after being mixed with water to form a slurry. It is often used to make building materials such as gypsum board and gypsum blocks. It is used for interior partition walls, ceiling decoration, etc. Because of its light weight, sound insulation, heat insulation and other characteristics, it can effectively improve the quality of the living environment. In medicine, plaster is often made into plaster bandages, which are used to fix fractures, help bones reset and heal, and provide important support for the recovery of injuries. In industrial production, gypsum can be used as a cement retarder to adjust the setting time of cement and ensure the quality and performance of cement products. In addition, gypsum is also used in agriculture to improve soil structure and create a good soil environment for crop growth.
In summary, sugar cubes are mainly used for food seasoning and dessert making to satisfy people's taste pursuit for food; gypsum plays an important role in many fields such as architecture, medicine, industry, agriculture, etc., and has a wide impact on the development of society and people's lives.

"Tiangong Kaiwu" says: "Lime is refined by fire." Its physical properties are quite unique.
When lime is not exposed to water, it is mostly lumpy, hard in texture, rough in surface and different in color. It is often gray-white, and some turn yellow or green. Touch it with your hand, you can feel it solid, and the surface is obviously grainy. Place it under your nose, and there is almost no special smell.
However, when it encounters water, it changes greatly. In the instant of encountering water, lime reacts violently as if it is alive, and it is steaming hot in an instant, just like water in a pot. This is the "digestion" of lime. At this time, the block of lime rapidly disintegrates, from hard to soft, the volume will also expand, and gradually turn into a delicate paste, which is slaked lime.
Compared with quicklime, slaked lime has different properties. Its texture is more delicate, soft to the touch, and its color is whiter. And slaked lime has a certain stickiness and can be used for smearing, bonding, etc.
In addition, lime is hygroscopic. In a humid environment, lime can absorb moisture in the air, causing it to gradually deliquescent and eventually turn into powder.
Looking at the physical properties of lime, it turns into ash in case of fire, changes in case of water, and absorbs moisture. This is its unique feature and is useful in many fields, such as construction, agriculture, etc. It is a wonder in the world.

The nature of boric acid is truly wonderful. Boric acid is pure and static in color, often in the shape of powder, with a light texture like snow, odorless and slightly acidic, and its properties are flat and stable.
Its chemical properties have the general characteristics of acid. It can combine with alkali, like yin and yang sympathetic, to form salt and water. If it encounters sodium hydroxide, that is, sodium borate and water, this is the normal way of acid-base neutralization. Its reaction formula is clear and clear, and it is a good example of chemical change.
Boric acid also has its own unique characteristics. When heated, it can slowly lose water and gradually change its shape, which is its thermal change. And boric acid in water, although it can dissociate hydrogen ions, its acidity is quite weak, not as strong as strong acid, just like a humble gentleman, mild but not ostentatious.
Furthermore, boric acid has the ability to prevent corrosion, which can keep the material fresh and protect its quality without changing. In the field of industry, it has a wide range of uses, which can add color to glass and make it crystal clear; in the field of medicine, it can also clean wounds and prevent diseases from developing.
Its strangeness is even more strange. Boric acid can be combined with polyols to form special compounds. This property is very useful in the process of chemical analysis and organic synthesis. It is like the key to unlocking treasures and is valued by scientific researchers.
Looking at its chemical properties, boric acid has both the commonality of acid and its unique quality, whether static or dynamic, slow or fast, and it can be used in various fields, making it a wonder in the world.

"Tiangong Kaiwu" says: "Where bamboo paper is made, it goes out of the south, but Fujian Province is unique in its prosperity. When the bamboo shoots are born, look at the depth of the mountain nest, and the bamboo is fed with those who will grow branches and leaves. During the festival, the mango seeds are cut down from the mountains. Cut off five or seven feet long, and open a pond on this mountain, fill it with water and drift it. When the water in the pond is afraid of drying up, use bamboo soda to lead it, and continue to pour in the water. Soak it for a hundred days, add a mallet to wash, and wash away the coarse shells and green skins. Among them, the bamboo is shaped like ramie, and it is pulped with a good lime juice, boiled under the bucket, and the fire is at the rate of eight days and eight nights." This is the process of making bamboo and paper by the ancient method. Although the method of making paper by caustic soda is not included in the book, it can be deduced from the principles of later chemical industry.
Caustic soda, that is, sodium hydroxide, is strongly alkaline. In papermaking, it can be used to dissolve lignin. To make pulp by caustic soda, first take bamboo, wood and other fiber raw materials and cut them into small sections or pieces. This step is like cutting off the ancient method. Then the raw materials are placed in a steamer, and the caustic soda solution and water are added in a certain proportion. This can be compared to the ancient method of adding lime juice to the pulp.
Seal the steamer and heat it up to an appropriate temperature, usually around 150-180 ° C, for several hours, so that the caustic soda fully reacts with the raw materials, dissolves the lignin, and separates the fibers. After the reaction is completed, cool the steamer and release the cooking liquid, that is, black liquor, which contains impurities such as dissolved lignin, and the fibers remain in the vessel. Then wash the fibers with water to remove residual caustic soda and impurities, and obtain a purer pulp, which is hammered like the ancient method.
After the beating process, the fibers are broomed and separated, and the bonding force between the fibers is enhanced. Although the ancient method is not detailed, it is necessary for papermaking. Finally, through papermaking, drying and other steps, the paper can be obtained, and the ancient papermaking method is formed and dried. In this way, it is the method of caustic soda papermaking.

Fuyang flintlock takes fire in the sun, and Fang Zhu takes water in the moon, all of which are caused by the nature of things. However, there are many things that should be paid attention to when hiding and losing medicinal stones.
When Tibetan medicinal stones are stored, the first thing to pay attention to is the place. When choosing a high and dry place, avoid a place where water is wet, to prevent it from being damp and deteriorating. If hidden in a humid place, medicinal stones are easily eroded by water vapor, and their effectiveness will be reduced. "Notes on the Collection of Materia Medica" says: "All medicines do not want to be exposed to the sun, and when you see more windy days, your strength will be thin, so you should be familiar with them." Therefore, the place where they are stored must be dry and ventilated, and they can be protected from the sun and light, so that the properties
The second is related to the container. Those who use medicinal stones should preferably use pottery and porcelain, because of its stable properties, and do not violate the medicinal stones. Avoid using metal utensils, for fear that they will combine with medicinal stones and damage their medicinal power. Such as gold, silver, copper and iron, etc., are not available. In the past, people used copper utensils to store pills, and over time, the color of the pills changed, and its effect was not as good as before. This is evidence.
As for transporting medicinal stones, you should not be careless on the way. It must be firmly packed to prevent it from breaking due to bumps and collisions. If the medicinal stones are in powder form, they should be sealed tightly to prevent leakage. And when transporting, pay attention to the climate. When it is hot in the summer, prevent it from being heated and deteriorating; when it is cold, avoid it from being frozen and damaged. In case of wind and rain, it should be properly sheltered and not let the medicinal stones be soaked in water.
Furthermore, those who carry medicinal stones should also be careful. It should be noted that medicinal stones are related to human life and should not be ignored. The movement should be slow and the behavior should be steady, and they should not be thrown or dumped wantonly. And the handler should know the nature of medicinal stones, and should not mix the medicinal stones of mutual restraint in one place for transportation, so as not to affect each other and lose the medicinal effect.
In short, the possession and loss of medicinal stones, although small, are important, and must not be negligent. Only by treating them with a respectful heart can they ensure the efficacy of medicinal stones and prepare for healing.