thiazole-2-sulfonyl chloride

What are the physical properties of saltpeter-2-caustic soda solution? This question is related to the properties of substances and is quite important in chemical industry. Today, imitating the classical style of "Tiangong Kaiwu", I will solve it for you.
Caustic soda solution, that is, an aqueous solution of sodium hydroxide. Its appearance is often colorless and transparent, just like clear water, without variegated colors or turbidity, and can be seen as pure as glass. This is the state it sees.
When it comes to smell, caustic soda solution has no special smell, no fragrance or odor, and no obvious smell, similar to the smell of ordinary clear water.
As for the touch, it is filled with a clean vessel, and the hand touches the wall of the vessel. If the temperature of the solution is similar to normal temperature, the touch is slightly the same as touching water; however, if the temperature of the solution is different, it will feel warm when hot, and cold when cold. And the caustic soda solution has a greasy feeling. When the hand touches it, it can feel that its surface is coated with thin oil, which is one of the major characteristics that distinguish it from others.
The density of caustic soda solution is greater than that of water. Because sodium hydroxide dissolves in water, the mass of the substance per unit volume increases. The caustic soda solution and water of the same volume are placed at both ends of the balance, and one end of the caustic soda solution can be seen sinking, which shows that its density is greater than that < Br >
Furthermore, the caustic soda solution has good electrical conductivity. Because it can ionize sodium ions and hydroxide ions in water, these ions can move in a directional manner under the action of an electric field, so the solution has the ability to conduct electricity, which is an important physical property and is used in many electrochemical processes.
The above is the general physical properties of the caustic soda solution, hoping to solve your doubts.

If you want to know the chemical properties of saltpeter (that is, "Sentinel-2-Window Gas" in the question, when referring to saltpeter), listen to me in detail.
Saltpeter, chemically called potassium nitrate, has a lively and changeable nature and many wonderful characteristics. First and foremost, saltpeter is highly soluble in water, and quietly dissipates in contact with water, as if it is invisible, just like a dragon entering the abyss, and it is difficult to find traces. Under normal temperature, its aqueous solution is quite stable, but if the temperature changes suddenly, its properties will also change.
Furthermore, saltpeter is easily decomposed when heated to a certain extent. When it is heated to a certain extent, it will be like dry wood in contact with fire, causing violent changes in an instant. When decomposed, it will release oxygen. This property makes it play a crucial role in many chemical reactions, just like the key dancers on the stage, controlling the rhythm of the reaction.
Saltpeter is also oxidizing. In chemical reactions, it is often like a brave general, seizing electrons from other substances and causing it to oxidize. This oxidizing property makes saltpeter useful in fireworks, gunpowder manufacturing and other fields. Ancient fireworks bloom in the night sky, beautiful, and saltpeter is indispensable; the power of gunpowder, shaking the world, saltpeter is also an indispensable element.
In addition, saltpeter can react with acids and bases. When exposed to acid, its reaction is like a stream flowing into a river, blending with each other to produce new compounds; when exposed to alkali, it is also like the intersection of yin and yang, presenting a different chemical landscape. These various reactions constitute the rich and varied chemical properties of saltpeter, making it like a bright star in the chemical world, shining with unique light, attracting countless Fang families to explore its mysteries, applying it to many fields and benefiting the world.

What are the main uses of saltpeter-2-caustic soda solution? These two are also recorded in "Tiangong Kaiwu".
"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty, which describes the uses of many substances in detail. Among them, saltpeter, also known as flame nitrate, potassium saltpeter, etc. It has a wide range of uses in ancient times, mainly used in military, medical and alchemy fields. In the military, saltpeter is the key ingredient of gunpowder. The formula of gunpowder is mixed with saltpeter, sulfur and charcoal in a specific ratio. Saltpeter acts as an oxidizing agent, releasing a large amount of oxygen when burning, causing the gunpowder to burn violently and explode. This is widely used in war and changes the form of war. In medicine, saltpeter has the effect of moisturizing dryness and softening, clearing away heat and reducing swelling, and can be used to treat some diseases. In alchemy, the ancients believed that saltpeter had a miraculous effect and could react with other medicines, hoping to use it to refine elixirs of immortality.
Caustic soda, that is, sodium hydroxide, is highly alkaline and corrosive. Although it was not as widely and finely used in ancient times as it is today, it also has its uses. For example, it can be used to make soap. The ancients used animal fat and caustic soda solution to cook together, and the saponification reaction made soap for cleaning. In the textile industry, caustic soda solution can be used to treat fabrics, helping to remove impurities and oils from fabrics, making fabrics cleaner and improving dyeing effect.
To sum up, saltpeter was of great significance in ancient military, medicine, and alchemy; caustic soda was mainly used for soap making and textile pretreatment, etc. Both played an important role in various fields of ancient production and life, reflecting the ancient understanding and utilization of material properties and uses.

"Tiangong Kaiwu" says: Saltpeter and sulfur are the important ingredients for fireworks, and flame nitrate is particularly heavy. As for the system of flame nitrate, there are many ways.
First, dig the ground into a pit, about three feet deep, lined with earth bricks. Take the soil containing nitrate, break it, put it in the pit, use water to make it fertile, stir well. When it is clarified, lead the water to other utensils, torment it. If the water consumption is more than half, stop the fire, if it is cold, the nitrate will form at the bottom, remove the water, and you can get saltpeter. This is the method of taking nitrate from the soil.
Second, scrape the soil scale at the roots of the old wall, where it is often wet. This soil scale contains a lot of nitrate, soak it in water, filter out the dross, take its clear liquid, and fry it in a pot. At the beginning, the firepower should be fierce, so that the water can boil quickly, and then gradually slow down. When there are nitrate flowers floating on the surface, that is, take a spoon and put it in a cold place until it crystallizes. Repeat this to get net nitrate.
Third, if there is a spring of salt water, take its water. Fry it in a pot and fry it with fierce fire. When the water is dry, the nitrate will remain in the pot. However, if the nitrate is too mixed, it must be melted in water, filtered out impurities, and re-fried to get pure nitrate.
All these methods are condensed by the wisdom of the ancients, and each has its own use in the system of flame nitrate. When appropriate to local conditions, the best quality of flame nitrate can be obtained for fireworks and firearms.

Mercury is a highly toxic substance, especially its vapor, which is a serious danger to human health and the surrounding ecology. When storing and transporting mercury, be careful and do not neglect it.
When storing mercury, it is the first heavy airtight device. It must be filled in a solid container that does not vent to prevent the mercury from escaping. This device should be placed in a low temperature, dry and well-ventilated place, away from heat and fire sources, because mercury is easily evaporated when heated, and fire increases its volatilization speed, which will cause disaster not far away. And it is advisable to set up warning signs in the hiding place to let the public know that it is dangerous, and do not approach it.
As for transporting mercury, choosing a device is also a priority. The selected device, in addition to being airtight, should also be sturdy and vibration-resistant to prevent it from breaking during transportation. During transportation, it should be handled lightly and steadily to avoid its violent vibration and collision. Escorts must be familiar with the nature and danger of mercury, and prepare emergency equipment, such as materials for absorbing mercury, protective clothing and masks. If there is a risk of mercury leakage on the way, stop the transportation immediately, and deal with it in a proper way. First cut off the dangerous area, and collect the mercury quickly at the next time, so as not to let it disperse and harm the public.
Also, no matter whether it is hidden or transported, it should abide by laws and regulations. Record the amount, source and destination of mercury in detail for investigation. If there is a slight mistake, it will be severely punished. This is all to protect people and protect the environment, and must not be slack. Those who hide and transport mercury should be careful no matter how careful they are, so as to avoid disasters in the future, keep everyone healthy, and protect the world in Qingning.