"Tiangong Kaiwu" was written by Song Yingxing in the Ming Dynasty, and the book describes all kinds of skills in the world in detail. Today, in terms of heptamethyltriethoxysilane, this is a chemical substance. When "Tiangong Kaiwu" was written, there was no such thing, but it can be used in the past, or it can be inspired.
The use of heptamethyltriethoxysilane is mostly in the chemical industry. First, it can be used as a coupling agent. This substance can build a bridge between inorganic materials and organic materials, and enhance the bonding force between the two. Although the ancient technology did not have the name of silane coupling agent, it also had a way to combine different materials. For example, in lacquer art, different parts of the lacquer were bonded to achieve a stable effect. Heptamethyltriethoxysilane is used for this, which can make the performance of composite materials better, and the ancients sought the way of durability of utensils.
Second, it can be used for surface treatment. Can improve the properties of the surface of the material, such as hydrophobicity, wear resistance, etc. Ancient utensils are often waxed, oiled, etc., to protect the surface of the object, making it waterproof and wear-resistant. Heptamethyltriethoxysilane is used for material surface treatment, which can give the material better protective properties, just like the intention of the ancients to protect the object, but the means are more subtle.
Third, in some paints and adhesives, heptamethyltriethoxysilane can be used as an additive to improve the performance of the product. Ancient paints and adhesives were mostly made of natural materials, and the addition of heptomethyl triethoxysilane could make the coating adhesion stronger and the adhesive bonding effect better, just like the ancients added special materials to the formula to improve product quality.
To sum up, although heptomethyl triethoxysilane is not ancient, its use is similar to the ancients' pursuit of improving the performance of utensils and protecting utensils, all of which are to make the best use of things to achieve better results.

Heptanoyl trimethoxysilane is an organosilicon compound with interesting chemical properties. In this substance, heptanoyl group contains a longer carbon chain, which imparts certain hydrophobicity to the molecule.
From the perspective of reactivity, trimethoxysilyl group is active and reactive. When exposed to water, it is easy to hydrolyze to form a silanol group (Si-OH). This hydrolysis reaction is as follows:
\ [R - Si (OCH_3) _3 + 3H_2O\ longrightarrow R - Si (OH) _3 + 3CH_3OH\]
Where\ (R\) represents heptanoyl group. The generated silanol groups can be further condensed to form siloxane bonds (Si-O-Si), intermolecular cross-linking is realized, and a three-dimensional network structure is constructed.
Because of its special chemical properties, heptanoyl trimethoxysilane is widely used in the field of material surface modification. Applied to the surface of the material, trimethoxysilane can be hydrolyzed and condensed to firmly anchor the surface of the material. The heptanoyl groups are arranged outward to change the surface properties of the material, increase its hydrophobicity, and make the material waterproof and anti-fouling.
In the field of organic synthesis, heptanoyl trimethoxysilane is also a useful reagent. Its heptanoyl group can participate in a variety of organic reactions, such as substitution reactions with nucleophiles, the introduction of specific functional groups, which helps to synthesize complex organosilicon compounds, opens up new paths for organic synthetic chemistry, and is of great significance in the development and preparation of new materials.

When storing Dansha mercury-based trimethoxysilane, pay attention to many matters. This is the key to the proper preservation of the substance and should not be ignored.
First, you need to choose a cool and dry place. Because Dansha mercury-based trimethoxysilane is afraid of moisture and high temperature, if placed in a humid place, water vapor is easy to blend with it, causing its properties to change; under high temperature, it is also easy to cause chemical reactions and damage its quality. Therefore, the warehouse should be well ventilated, and the temperature and humidity should be precisely controlled to ensure its stability.
Second, the storage place must be away from fire sources and oxidants. Dansha mercury-based trimethoxysilane has a certain chemical activity. When exposed to open flames or oxidants, it is easy to trigger a violent reaction, or cause the risk of combustion or even explosion, endangering the safety of the surrounding area. Fireworks should be strictly prohibited around it, and fire extinguishing facilities should be properly placed to prepare for emergencies.
Third, the choice of container is crucial. When it is made of corrosion-resistant materials, such as special plastic or glass containers, it must be tightly sealed. This can not only prevent it from evaporating and escaping, harming people's health, but also prevent it from coming into contact with external substances and causing component variation. Whether it is tightly sealed or not is related to the success or failure of storage.
Fourth, when storing, it should be marked and recorded in accordance with relevant regulations. Write down the storage time, batch, quantity and other information in detail for traceability and management. Regularly check its storage status, and if there is any abnormality, dispose of it immediately. This is a necessary measure to ensure its quality and safety.
All of these are things that should be paid attention to when storing Dansha mercury-based trimethoxysilane, and must not be careless. Only by following the specifications and taking good care of it can its performance be maintained as before, and it can be used in the future to play its due effect.

The preparation method of methoxy triethoxysilane from Qiqiao Ejiao is to take high-quality Ejiao, polyester it with clean water, remove its impurities, and then put it in a kettle, add an appropriate amount of water, and boil it slowly. When it melts into a glue liquid, re-filter it to remove the residue to obtain a pure glue liquid.
Take another appropriate amount of methoxy triethoxysilane, slowly pour it into the glue liquid, and stir it quickly with a wooden paddle to ensure that the two are evenly mixed. When stirring, pay attention to the change of temperature, do not make it too high or too low, and it is advisable to maintain it at a specific temperature range to ensure a smooth reaction.
When the two are mixed evenly, move it into a special container, seal it, put it in a cool and dry place, and let it stand for a while. During this time, the glue and methoxy triethoxysilane will slowly react to produce the desired product.
After a certain period of time, open the container, observe its shape and color, and if it has reached the expected state, the preparation is complete. The prepared Qiqiao Ejiao methoxy triethoxysilane has unique properties and can be used in many fields, including pharmaceuticals, chemicals, etc. When operating, it is necessary to strictly abide by the procedures and proceed with caution to obtain high-quality products.

When using heptadecyl triethoxysilane, the first to bear the brunt is the risk of fire. Heptadecyl triethoxysilane is flammable. If it encounters an open flame or a hot topic, it is easy to ignite a raging fire, and even cause the danger of explosion. If there is a slight spark splashing on it in the workshop, it will be like dry wood encountering fire, and the fire will spread in an instant, endangering the surrounding people, animals and property.
Furthermore, it is related to health. Its volatile gas, if inadvertently inhaled, can cause respiratory tract invasion, cough and asthma in light cases, and lung damage in severe cases. And in contact with the skin, there may be irritation, itching, redness and swelling are common. If you touch your eyes by mistake, it will sting unbearably, or even damage your eyesight, so you should not underestimate it.
There are also environmental worries. If heptadecyl triethoxysilane accidentally leaks out and flows into the soil and water, it will harm the ecology. In the soil, it may cause soil mutation, affecting the growth of plants; in the water, it may harm the lives of aquatic organisms and disrupt the balance of aquatic ecology.
Therefore, when using this heptadecyl triethoxysilane, you should strictly abide by safety regulations, prepare fire extinguishers, implement ventilation policies, and use protective equipment to prevent leakage, so as to avoid all kinds of risks and ensure the safety of people, things, and the environment.