1,4-Dioxane is an organic compound with a wide range of uses. In the context of "Tiangong Kaiwu", although there was no name for this specific chemical at that time, its use can be compared to related things from the perspective of ancient craftsmanship. First, 1,4-dioxane is often used as an organic solvent. In ancient crafts, such as lacquer art, printing and dyeing, solvents were used to dissolve pigments, resins and other substances. If 1,4-dioxane existed at that time, it could be used as a solvent to dissolve paint, making the paint liquid more uniform, easy to apply, and improving the luster and durability of the paint surface. This is like the method of blending paint described in "Tiangong Kaiwu", which uses the power of solvents to optimize the performance of paint. Second, 1,4-dioxane is an important intermediate in organic synthesis. Ancient alchemy, pharmaceuticals and other processes may be able to build complex organic molecules based on them. Although the synthesis concept at that time was different from today, in the process of pursuing substance transformation, if there is this substance, it may help to synthesize new drugs or special materials. Such as ancient pill refining, or use it to participate in the reaction to achieve special chemical changes and obtain the desired alchemy properties. Third, because of its good stability and solubility, it can be used in the textile industry or fiber treatment. Such as silk dyeing, 1,4-dioxane or can help dyes better adhere to fibers, improve dyeing uniformity and fastness, similar to the textile dyeing techniques recorded in "Tiangong Kaiwu", thereby improving fabric quality.

1,4-dioxane is a common organic compound. Its physical properties are quite unique and it is widely used in many fields. Looking at its properties, under room temperature and pressure, 1,4-dioxane is a colorless and transparent liquid, just like clear water, but it also has a unique odor, slightly ether-like breath, which can be distinguished by smell. Its boiling point is about 101.3 ° C. At this temperature, the liquid gradually turns into a gas and rises. The melting point is 11.8 ° C, and the temperature drops to that, that is, it changes from liquid to solid, just like water condenses into ice. Furthermore, the solubility of 1,4-dioxane is also an important property. This substance can be miscible with water in any ratio, just like water emulsion blending, without barrier. And for many organic compounds, such as alcohols, ethers, ketones, etc., it also shows good solubility, which can be described as one of the best organic solvents. In chemical production, organic synthesis and other processes, it is often used as an excellent solvent to help various chemical reactions. Its density is about 1.0336g/cm ³, which is slightly heavier than water. If it is placed in one place with water and left to stand for a while, it can be seen sinking underwater. The volatility of 1,4-dioxane should not be underestimated. It is volatile in the air, like light smoke, which makes it necessary to pay attention to precautions during use. In addition, because of its polarity, it can play a unique role in some systems involving polar interactions, affecting the process of reactions and the characteristics of products.

1,4-Dioxane is also an organic compound. Whether its chemical properties are stable or not needs to be investigated in detail. 1,4-Dioxane has a cyclic structure, and the ring contains dioxygen atoms. Due to its molecular structure, it is quite stable under normal temperature and pressure. This compound is in the state of a colorless liquid, has a slightly sweet odor, and is miscible with water and most organic solvents. From a chemical point of view, 1,4-Dioxane is relatively stable. Its ring structure gives it a certain stability, making it difficult to occur under general conditions. In special circumstances, it can also be changed. In case of strong oxidizing agent, or under extreme conditions such as high temperature and high pressure, 1,4-dioxane can be oxidized, and its ring structure may be destroyed. In the field of organic synthesis, 1,4-dioxane is often used as a solvent. Because of its good stability and solubility, it can provide a suitable environment for many organic reactions, and it generally does not react easily with the reactants, which can ensure the smooth progress of the reaction. However, it should be noted that although 1,4-dioxane is usually stable, it is flammable and can be burned in case of open flame and hot topic. And because of its volatilization, when the concentration in the air reaches a certain degree, it may be exposed to fire or explosion. In summary, the chemical properties of 1,4-dioxane are relatively stable under common conditions, but its stability is challenged under specific extreme conditions or special reagents. Those who use it should be familiar with its properties and operate with caution to prevent accidents.

The common preparation methods of 1% 2C4-dihydroxybutanone, also known as ethylenin, are as follows: One is the chemical synthesis method. Using butanedione as the starting material, 1% 2C4-dihydroxybutanone can be obtained by catalytic hydrogenation. This method requires specific catalysts, such as some metal catalysts, and the reaction conditions are quite particular. Temperature, pressure and other factors have a great influence on the reaction process and product purity. Another chemical synthesis path is to use ethyl acetoacetate as the raw material and convert it into a multi-step reaction. This process involves many organic reaction steps, which require very high requirements for reaction operation and control. It is necessary to precisely control the reaction conditions of each step in order to obtain a product with high yield and purity. The second is the microbial fermentation method. Many microorganisms have the ability to synthesize 1% 2C4-dihydroxybutanone, such as some lactic acid bacteria. With sugars as substrates, under suitable culture conditions, lactic acid bacteria can synthesize 1% 2C4-dihydroxybutanone through their own metabolic activities. This fermentation method is green and environmentally friendly, and the reaction conditions are relatively mild, without extreme temperatures and pressures. However, the fermentation process is prone to contamination by bacteria, which requires strict requirements on the cleanliness of fermentation equipment and the environment. At the same time, the growth and metabolism of microorganisms are restricted by various factors such as substrate concentration, pH value, and dissolved oxygen, and the fermentation conditions need to be carefully regulated to achieve the best production effect. The third is the enzyme catalysis method. Specific enzymes can catalyze the conversion of specific substrates to 1% 2C4-dihydroxybutanone. Enzyme catalysis is efficient and specific, and can achieve reactions under milder conditions. However, the acquisition and preservation of enzymes are challenging. The activity of enzymes is easily affected by environmental factors such as temperature and pH value, and the cost of enzymes may be high. For large-scale production, cost control is a key consideration.

1% 2C4-dioxane is also an organic compound. During storage and transportation, many matters need to be paid attention to. First word storage. This substance is flammable, so it should be stored in a cool and ventilated warehouse. Keep away from fire and heat sources, and the storage temperature should not exceed 30 ° C. Because steam is heavier than air, it can spread at a lower place to a considerable distance. In case of fire, it will catch fire and backfire. Therefore, the location of the warehouse should also be carefully selected, and fireworks should be strictly prohibited. At the same time, it should be stored separately from oxidizing agents, acids, alkalis, etc., and should not be mixed. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials to prevent leakage, so that it can be disposed of in time to avoid the expansion of harm. Second discussion on transportation. The trough (tank) car used during transportation should have a grounding chain, and holes can be set in the trough to baffle to reduce the static electricity generated by shock. Transportation vehicles should be equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. It is best to transport in the morning and evening in summer to avoid high temperature periods to prevent its volatilization from increasing due to temperature rise and increase danger. During transportation, ensure that the container does not leak, collapse, fall or damage. It is strictly forbidden to mix and transport with oxidants, acids, alkalis, edible chemicals, etc. The speed of the vehicle should not be too fast during transportation, and it is not allowed to forcibly overtake the car to ensure smooth and safe transportation. Once there is a leak during transportation, it must be dealt with immediately according to the emergency plan to evacuate the surrounding people and prevent the occurrence of poisoning and other hazards.