5 Iodofuraldehyde

5-% sulfuric acid is the crystallization of sulfuric acid pentahydrate, and its main use is wide.
First, in the field of production, 5-% sulfuric acid is often used in the distribution of multi-liquid waves. Wave multi-liquid is an important factor, which can effectively prevent and control multiple plant diseases, such as grape downy mildew, fruit anthrax, etc. The principle is that the seeds in the grape can coagulate the protein of the pathogen and inhibit the growth and reproduction of the pathogen. Taking grape planting as an example, during the grape growth period, the production rate of downy mildew can be greatly reduced and the amount of grapes can be guaranteed.
Second, in terms of work, 5-% can be used in the production of grapes. Adding water to the liquid can make the grape more uniform and dense, and improve the corrosion resistance and beauty of the grape parts. For example, in the chemical industry, it can provide particles to promote the homogenization of the surface of the material, forming a bright and firm layer, which is widely used in the production of products, products, etc.
Third, in the chemical industry, 5-% is also commonly used in chemical processing. It can be used for the generation of certain chemical reactions, such as the oxidation of sulfuric acid to generate oxidized pigments. It can also be used for other chemical-containing compounds as a source of chemical synthesis.
Furthermore, in the field of water treatment, 5-% can be used for algae. Algae propagation in water can inhibit the photosynthesis of algae, prevent their growth, and achieve the purpose of water purification. It is widely used in water management in some ponds, waters, etc.

5-% saltpeter sulphur, its physical properties can be investigated. Saltpeter, white and often crystalline, the quality is quite brittle, easy to powder. It dissolves in water, quickly and can make the water temperature drop, which is what makes it different from ordinary things. Its taste is salty and cold, and its smell is slightly refreshing.
The color of sulfur is yellow, like the beauty of autumn chrysanthemum, and it is firm and brittle at room temperature. It has a slippery feeling when touched, and its smell is very different, and everyone can distinguish it. When burned, it will emit blue-purple flames, and produce pungent smoke, which is uncomfortable to smell.
Saltpeter reacts very strongly in fire, can support combustion and explode, and is an essential material for making gunpowder. Sulfur is also flammable, and when heated, its shape and nature gradually change, first soft and flowing, then dark, and the state is also different.
Both are valued by ancient alchemists and are often seen in many alchemy techniques. Due to its unique physical properties, it can be made into extraordinary things through clever matching and synthesis. The formation of gunpowder depends on the delicate ratio of the two and charcoal. From this perspective, although 5-% saltpeter sulphur is an ordinary thing, its physical properties are wonderful and its wide range of uses is a wonder of creation, which has great contributions to the country's art and people's livelihood.

5-% hydrazine acid, which is a chemical substance. It is white in color and has the appearance of crystals. It is soluble in water, slightly soluble in alcohol, and insoluble in ether.
In terms of its chemical properties, it has the ability to be original. In the context of chemical reactions, it is often used as a raw material. With the opposite of gold, it can make gold particles reduce the precipitation of gold particles. For example, when the gold particles meet, the gold particles can be original.
It is also weakly acidic. In water, it can be slightly solved to produce water particles, so it is acidic. This property makes it able to neutralize the reaction and generate water in the phase.
Furthermore, 5-% hydrazine acid has a certain degree of quality. However, when it comes to oxidation, it is easy to react. Because of its original nature, it can be oxidized and oxidized, and the chemotaxis can be changed.
Under the addition of alcohol, 5-% hydrazine acid can also decompose. Decomposition, or raw ammonia, nitrogen, chlorine, etc., is caused by the cracking of its molecules and the weight of its atoms.
Of course, 5-% hydrazine acid, with its original, weak acidity, specific qualitative and additive decomposition properties, is indispensable in the field of chemistry, and is used in the process of general reaction engineering, chemical research and engineering.

5 - The synthesis method of saltpeter is detailed in "Tiangong Kaiwu".
The synthesis method of saltpeter is mainly related to the material. Saltpeter is mostly born in the soil, or at the root of the wall and the foot, there are frost-like substances, which may be the clue of saltpeter. If you want to take it, dig its soil first. The soil should be white and moist, and the soil contains enough nitrate.
Second, it is the technique of frying. Put the soil taken in a large kettle and add water to soak it. The amount of water must be moderate. If there is less water, the nitrate will be difficult to get out, and if there is more water, the subsequent frying will be time-consuming. Soak for a long time, so that the nitrate in the soil is completely dissolved in water. Then, fry it over a fire, and the fire should be even and stable. At first, the fire causes the water to boil quickly, and when the water is less and less, turn to a low fire and boil slowly to prevent the nitrate liquid from overflowing and prevent damage to the nitrate.
When frying, you must stir frequently to make the heating uniform. When there are crystals emerging on the liquid surface of the kettle, this is a sign that the nitrate will precipitate. At this time, you should pay more attention to the heat, and do not make the fire too intense. As the number of crystal flowers increases, you can stop the fire and place the kettle in a cool place, so that the nitrate liquid can cool naturally. After cooling, the saltpeter crystallizes at the bottom of the kettle, white as snow, and shaped like a needle.
There is another way to refine The obtained saltpeter, or contains impurities, wants to make it pure, can be re-dissolved in water, re-fried, if repeated several times, the purity of saltpeter gradually increases.
The ancient method of synthesizing saltpeter, although there is no scientific precision instrument today, but with experience and wisdom, it can also be used to obtain saltpeter for alchemy, medicine, gunpowder and other things. In fact, the wisdom of the ancestors has contributed to the development of science and technology.

5 - In the market, the quality of the octopus is due to the quality of the octopus, the quality of the land, and the supply and demand.
The octopus is also the egg sheath of the mantis. The superior octopus, the color is bright, the land is good, and the quality is good, and its height is high. Such octopuses may be worth ten gold or even hundreds of gold per catty. Because of the wealth of the essence and the effectiveness of the use, they are heavy in the world of the world.
The medium octopus, the second in quality, the color is low or slightly low, and the land is also slightly low. Its price per catty may be between twenty gold and fifty gold. The color of the top-class octopus, however, also has a certain practical value. In daily use and business, there are also corresponding needs.
To the bottom-class octopus, the color is dark, the ground is sparse, or there is a flaw. Its price is low, and it costs from 10 to 10 gold per catty. This octopus is slightly less effective, and it is mostly used for general purposes, or for the first time in the industry.
In addition, the supply and demand of the city also affect its price. If one wants it, and the supply is scarce, it must be reduced; on the contrary, if the supply is different from the demand, it will be reduced. Therefore, if you want to know the quality of the octopus, you need to observe its situation in the city, measure its quality, and balance its supply and demand in order to obtain its approximate quality.