1. The use of ***: It is also the deep water. In ancient times, it was often the place where the water was raised, because of its deep water and cold water, which was in harmony with the nature of the water. In addition, there are many rare aquatic plants in the world, which can be used for transportation, or for sacrificial offerings. In addition, it is also the place where the ancient people made the stars. Because the water surface is flat, it can reflect the stars and help the ancients make astronomical pictures.
2. ** The use of the river **: The river is also the river. Its primary use is in irrigation. The ancients lived according to the river, diverting the water from the river to irrigate the fields, so that the five rivers could be climbed. The river is also the main traffic road, and the boats can be used on it, so that things and people can be moved, and it is easy to communicate with each other. And the river water can be used as a source of water for the needs of humans and animals. In addition, in the land of Sichuan, there are many things such as rice, which can be used as utensils.
3. ** (Sanchuan Methyl) Musk Musk Uses **: The musk of (Sanchuan Methyl) Musk, which is named after you. Musk is used in the way of medicine, and has the effect of awakening the mind, promoting blood circulation, and relieving pain. Where there are diseases such as phlegm, violent convulsion, and coma in the middle, musk can be introduced and blocked with water. In the way of spices, musk is even more replaceable. Its fragrance lasts for a long time. When used in incense, it can make the fragrance mellow and mellow, so it is liked by the royal family. It is mostly used for incense and clothing incense. And in the ancient sacrificial rituals, musk was also often used as a sacrifice to express respect for the gods.

(Trimethylmethyl) ether, its physical properties are special.
First of all, under normal conditions, (trimethylmethyl) ether is mostly liquid, the ground is full, and the flow is very good. Like a babbling stream, it can flow freely in utensils. Its color is clear, transparent, just like clear water, and its color is dyed, allowing light to penetrate without mixing.
In addition, by smelling its smell, (trimethylmethyl) ether emits a special smell, which is not a strong pungent smell, but it is also clearly discernible. It is slightly more unique to the substance, and it is not as pleasant as a floral fragrance. It has its own unique characteristics.
and, (trimethyl) ether speed. Placed in an open container, it can be detected easily. Due to its high molecular activity, it is easy to escape from the bundle of the liquid phase and escape into the air. This characteristic also makes it need to be properly stored in some compounds to prevent dissipation.
As for solubility, (trimethyl) ether has good solubility in multiple solvents. It can be soluble in ethanol, ether, etc., just like water emulsion, and it is completely different. However, in water, its solubility is limited, and the two meet, briefly referred to as, can be (trimethyl) ether floating on water, and it is clear that it does not seem to violate each other.
And the boiling phase of (trimethylmethyl) ether is low. With a little addition of a source, it can be boiled and reduced. This property makes it useful in various fields such as chemical processes and extraction. Its density is also low for water, which is especially important when it comes to operations such as liquid-liquid separation. This property can be used to reduce the density difference between liquids with different densities.

(1) On whether the chemical properties of trimethylolpropane are stable
Fu trimethylolpropane, its properties are relatively stable. The chemical structure of the concept has a unique composition.
Its molecule contains three hydroxymethyl groups, and the existence of this hydroxymethyl group affects its chemical activity to a certain extent. However, this structure also endows it with many stable properties.
In terms of reactivity, under normal temperature and pressure, trimethylolpropane is not prone to spontaneous violent chemical reactions. When it coexists with common non-strong oxidizing and non-strong corrosive substances, it can maintain a relatively stable state.
In terms of thermal stability, trimethylolpropane can withstand a certain temperature without decomposition or significant chemical changes under normal heating conditions. When the temperature does not reach its decomposition threshold, its chemical structure can remain stable, and its properties have not changed significantly.
And although its solubility is different in common organic solvents, it does not change its chemical structure due to the dissolution process, that is, it does not chemically react with ordinary organic solvents, which shows that its chemical properties are stable in this environment.
However, it is also necessary to be clear that in the case of strong oxidants, such as mixtures of concentrated sulfuric acid and concentrated nitric acid, the hydroxymethyl of trimethylolpropane may be oxidized, causing its chemical structure to change and its chemical properties to change. In addition, under extreme conditions of high temperature, high pressure and specific catalysts, it may also trigger reactions such as polymerization, breaking the original stable state.
Overall, under conventional chemical environments and conditions, the chemical properties of trimethylolpropane are quite stable. However, when encountering special chemical reagents and extreme reaction conditions, its stability will be challenged and chemically changed.

To prepare trimethylolpropane, there are various methods.
One is the aldehyde-alcohol condensation method. First, n-butyraldehyde interacts with formaldehyde in an alkaline phase. At the appropriate temperature, α-hydrogen in n-butyraldehyde is active, and can condensate with the carbonyl group of formaldehyde to obtain 2,2-dimethylolbutyraldehyde. During the reaction, it is necessary to control the temperature and alkalinity. If the temperature is too high or the alkali is too large, the side reaction will produce, resulting in impure products. After the hydroreduction of 2,2-dimethylolbutyraldehyde, with an appropriate catalyst, such as Raney nickel, under a certain pressure and temperature, the carbonyl group is hydrogenated to a hydroxyl group, and then trimethylolpropane is obtained. In this process, the control of hydrogenation conditions is very important, which is related to the yield and purity of the product.
The second is the method of reacting formaldehyde and n-butyraldehyde through a special catalytic system. Using a catalyst with special activity and selectivity can optimize the reaction path. This catalyst can guide the reaction in the direction of generating trimethylolpropane and reduce the occurrence of side reactions. The catalytic system needs to be carefully prepared, and the amount of catalyst and the proportion of active components have a huge impact on the reaction. During the reaction process, the reaction process is closely monitored, and the temperature, pressure and other conditions are adjusted according to the reaction situation to ensure that the reaction proceeds smoothly and efficiently, so as to improve the yield and quality of trimethylolpropane.
There is also a method to participate in the reaction with specific additives. Appropriate additives are added to the reaction system of n-butyraldehyde and formaldehyde. Additives can change the reaction microenvironment and promote the contact and reactivity between reactants. For example, some additives can form a weak interaction with the reactants, making the reaction intermediates easier to form and convert, and then optimizing the reaction path. However, the choice of additives is very important, and improper additives or reaction disorders will affect the formation of products. After many tests, the best type and dosage of additives will be determined to achieve the good effect of preparing trimethylolpropane.

Ether, oil, and (trimethylphenyl) naphthalene are all materials used in the chemical industry. When storing and transporting, many matters should be paid attention to.
Safety is the first priority. Many of these materials are flammable, and even have the risk of explosion. Therefore, the storage place must be far away from fire and heat sources, and the ventilation should be good. The warehouse should be equipped with lightning protection and anti-static devices to prevent accidents. When transporting, the means of transportation also need to have fire protection and explosion-proof facilities, and the escorts should be familiar with emergency response methods.
Times and the environment. If ether, oil, and (trimethylphenyl) naphthalene leak, it will pollute the soil, water, and ecology. In the storage place, there should be anti-leakage measures, such as cofferdams, collection tanks, etc. Transportation vehicles also need to ensure that the container is well sealed to prevent it from leaking.
The other is management. The storage place should be managed by a special person to record the amount and time of entry and exit in detail. Regularly check the storage equipment to see if there is any damage or leakage. Transportation needs to strictly abide by relevant regulations, complete transportation procedures, and the vehicles and personnel used must meet the qualification requirements.
There is also packaging. The packaging material needs to be adapted to the characteristics of these items, which are strong, durable and well sealed. On the packaging, the product name, hazard characteristics, emergency response methods and other information should be clearly marked to identify and respond.
Overall, the storage and transportation of ether, oil, and (trimethylphenyl) naphthalene are related to safety and the environment, and must be treated with caution, and must not be negligent in order to ensure that everything goes smoothly.