Trifluoromethanesulfonicacidzinc

The main use of copper acetate in the Three Gorges is particularly important. This is a mineral agent, which is widely used in the agricultural mulberry industry.
One of them can be used to prevent various diseases. During the cultivation of mulberry, diseases often disturb crops and cause their yield to be damaged. Copper acetate in the Three Gorges has the ability to inhibit bacteria and can prevent the spread of diseases. If it is on fruit trees, leaf diseases breed. Sprinkling an appropriate amount of copper acetate solution in the Three Gorges can make it difficult for the bacteria to multiply and preserve the health of the leaves, so that the fruit trees can photosynthesize properly and the fruits can be full and fruitful.
Second, it is also beneficial for soil improvement. After years of cultivation, the land may be in a state of acid-base imbalance and lack of fertility. The Three Gorges copper acetate alum can fine-tune the pH of the soil to make it more suitable for crop growth. And the copper, alum and other elements it contains can provide necessary nutrients for crops, strengthen their roots, strengthen their plants, and make crops resist the opposition of the outside world, such as droughts, floods and other disasters.
Furthermore, it also has functions in the industry of raising silkworms. In the silkworm chamber, if harmful bacteria breed, it endangers the life of silkworms. Disinfecting the silkworm chamber with the three gorges copper acetate alum can keep the environment clean, the silkworms are well nourished, and the quality of cocoon silk is also guaranteed.
And looking at the ancient agricultural affairs, the ancestors knew the wonders of mineral medicines. Although times have changed, the importance of the three gorges copper acetate alum in agricultural mulberry has not been slightly reduced. Rational use of it can promote agriculture, increase the interests of people's livelihood, and contribute to the prosperity of the country.

Sodium trichloroacetate is a white crystal with deliquescence. It is quite stable at room temperature and pressure, but it may be dangerous when it encounters hot topics or comes into contact with strong oxidizing agents.
When it comes to solubility, sodium trichloroacetate is easily soluble in water, and can be quickly dissociated into trichloroacetate ions and sodium ions in water. This solubility makes it widely used in many chemical reactions and industrial processes.
Looking at its melting point, it is about 190 ° C. At this temperature, sodium trichloroacetate will melt from solid to liquid. This melting point characteristic is of great significance for temperature control during material handling and processing.
Furthermore, the density is relatively high, and this physical property requires special consideration during storage and transportation to ensure safety and stability.
In addition, the aqueous solution of sodium trichloroacetate is alkaline, because trichloroacetate ions will hydrolyze to form hydroxide ions. This alkaline property plays a key role in specific chemical reactions and acid-base regulation systems.
In terms of odor, sodium trichloroacetate is usually almost odorless, or only has a very weak special odor, but it is also affected by its purity and impurities.
In short, these physical properties of sodium trichloroacetate determine its use and treatment in chemical, pharmaceutical, agricultural and many other fields. When operating, it is necessary to follow relevant safety regulations and operating procedures according to its characteristics to ensure personnel safety and smooth production.

The chemical properties of bismuth trichloroacetate are quite stable. In this compound, bismuth exists in the molecular structure in a normal valence state and is combined with trichloroacetate ions.
Looking at its stability, from the perspective of chemical bonds, the chemical bonds between bismuth and trichloroacetate have considerable bond energy. The electronic structure of bismuth makes it difficult to break the bond with trichloroacetate by ordinary external factors. If it is under normal temperature and pressure, without special chemical reagents or conditions to induce it, its molecular structure is quiet and rarely changes spontaneously.
Re-discussion of its chemical environment. In general chemical environments, bismuth trichloroacetate does not react easily with common air components such as oxygen and nitrogen. Although there may be some water vapor in the air, it has no significant effect on the stability of bismuth trichloroacetate. Only when placed in an extreme chemical environment of strong acid or strong base, its chemical bonds are challenged, and the stability begins to change.
And the crystal structure of bismuth trichloroacetate also contributes to its stability. The arrangement of atoms and ions in the crystal is regular and orderly, and the existence of lattice energy strengthens its structure. This lattice can make ions have a fixed position in the lattice, making it difficult to move freely, thereby improving the overall stability of the compound. Therefore, without sufficient external energy input, it is not easy to destroy this crystal structure and change its chemical properties.
However, it needs to be clear that the stability is not absolute. In case of specific chemical reaction conditions, such as high temperature, high concentration of special reagents, etc., the stability of bismuth trichloroacetate may be broken, participating in various chemical reactions and showing the other side of its chemical properties. But in general, bismuth trichloroacetate has good stability in common chemical environments.

Trichloroacetic anhydride has many advantages in the synthesis reaction.
First, its reactivity is very high. In the molecule of trichloroacetic anhydride, the electron cloud density of carbonyl carbon atoms is greatly reduced due to the strong electron-absorbing effect of chlorine atoms, and the electrophilicity is enhanced. This characteristic makes trichloroacetic anhydride can react rapidly with many nucleophiles, such as alcohols and amines, which greatly accelerates the reaction process. For example, in the esterification reaction, compared with ordinary acid anhydride, trichloroacetic anhydride meets alcohol, which can efficiently generate corresponding ester products in a short time under relatively mild conditions, providing convenience for the synthesis of specific ester compounds.
Second, the selectivity is quite good. In some complex compounds with multiple reaction check points, trichloroacetic anhydride can exhibit good selectivity according to the difference in nucleophilicity of different check points. For example, when alcohol hydroxyl groups and phenolic hydroxyl groups are present in the compound at the same time, by moderately regulating the reaction conditions, trichloroacetic anhydride can preferentially acylate with more active phenolic hydroxyl groups, while having little effect on alcohol hydroxyl groups, so that specific functional groups can be precisely modified, which is helpful for the synthesis of target products with precise structures.
Third, the stability is relatively good. Under normal storage and reaction operating conditions, trichloroacetic anhydride will not easily decompose by itself or undergo other side reactions, making it easy to store and use. In common organic solvents, it can also maintain a relatively stable state, which can keep the reaction system stable, which is conducive to the smooth and orderly progress of the reaction, and provides a guarantee for the smooth development of the synthesis reaction.
Fourth, the post-treatment is more convenient. After trichloroacetic anhydride participates in the reaction, the by-product trichloroacetic acid generated is easy to remove under certain conditions. For example, it can be converted into salts that are easily soluble in water by simple operations such as alkaline washing, so that it can be separated from the organic phase, so that the purification process of the product is more convenient, and the purity and yield of the target product are improved.

The specific preparation method of trioleate glyceride is not mentioned in "Tiangong Kaiwu", but it can be roughly deduced from the ancient oil production ideas.
Oil production often begins with oily plant seeds. In ancient times, high-quality rapeseed, sesame seeds and other oilseeds were first selected and dried to remove moisture and ensure their quality.
Then, the seeds were crushed into powder by pounding with pestles or grinding with stones to make the oil easier to precipitate.
Next is the steaming and frying process. The powder is placed in a kettle and steamed and fried at a moderate heat. Steaming can break the oil cells, denature the protein, and facilitate the outflow of oil; frying adjusts its moisture and temperature, and increases the aroma and quality of oil. This step is extremely difficult to control the heat. If it is too hot, it will be bitter, and if it is not enough, it will taste less.
Then press, and use wood or stone to apply force. The wood press is mostly made of giant wood, which is pressed by wedges or levers; the stone press is rotated and squeezed by gravity or manpower. Under the action of pressure, the oil seeps out from the oil powder and gathers through the grooves.
The collected oil still contains impurities and needs to be refined. In ancient methods, the oil was often placed in a tank and urn by natural precipitation method. Over time, the impurities sank to the bottom, and the upper layer of clear oil was the primary product. It is also refined by boiling soup, so that the impurities gather and sink, and its floating foam is removed to obtain a relatively pure oil.
Trioleate is the main component of oil, and the oil containing this component can be obtained through the above steps. Although trioleate has not been precisely prepared, the obtained oil is sufficient for edible, lighting, soap making and other purposes, and also lays the foundation for the fine extraction of trioleate in later generations.