Chen Xu had the idea of ​​making soap for a long time, but the soap production process has involved relatively profound chemical reaction principles. It is not pure physical distillation such as essential oils and alcohol, and it is even more complicated than simply making simple compounds such as sulfate and hydrochloric acid.

The laboratory was very quiet, and a group of alchemists in white coats were busy in front of the test bench filled with bottles and jars and various glassware.

Alcohol lamps, test tubes, flasks, beakers, glass rods, test tube stands, complex distillers and various new experimental equipment with rotating reinforcement screws. If these alchemists were not tied with a bun and had beards, Chen Xu would even suspect that this was a chemical laboratory in later generations.

"Marty~" Seeing Chen Xu coming in, a group of alchemists were alarmed, and they all stopped their movements and bowed to greet them.

"No gift, Manager Cao is here!" Chen Xu waved his hand to say hello.

"Marty, what are your instructions?" A priest in his thirties with dark and thick hair quickly ran over with a bumpy run.

"Manager Cao, it's already spring now. In more than a month, it will be the time when all kinds of flowers and plants are flourishing. You can prepare. Tomorrow, go to the essential oil refining workshop of Huayu Palace in Jingyang to select some alchemists and assistant apprentices to go to the south to purchase flower and herbs to refine essential oils. The equipment and equipment are already ready, and they are still in the experimental factory. You can go directly to the factory supervisor to arrange the place. As for the place you want to go, you have already arranged in detail. Arrange in detail to find Fan Ermao to go to Qinghe Shopping Mall, everything will be followed by her arrangements!"

"Yes, Marquis, I will do it now!" Manager Cao hurriedly said goodbye after he saluted.

"Mr. Marquis, just ask someone to give me a small matter. Why bother to come to the laboratory in person!" An old Taoist priest with fairy spirit and fairy-like traits bowed with a smile on his face.

"I have something else to do here. What new things can you find out recently?" Chen Xu asked with a smile.

"Uh~" The old Taoist priest looked embarrassed in an instant, and his old face was a little red and stammered: "In recent months, there have been no discoveries except for collecting and preparing the lye that the Marquis needed..."

"Well, it doesn't matter if you didn't find it. How much alkali liquid is produced? Today I will use it. Go and get some, prepare the flask and stove. By the way, go and get a pound of grease..."

At Chen Xu's instructions, a group of alchemists scattered and prepared what Chen Xu wanted. Soon, the alkali beaker, fire, iron rack, etc. were all ready. A young alchemist also went to the kitchen of the Institute of Technology to bring a can of light yellow butter.

"Mr. Marquis, the oil is here. Are you planning to sauté hot pot in the laboratory today?" The young alchemist asked with a slightly excited expression in his face.

Chen Xu kicked the young alchemist in the butt with a laugh and cry, "Did you forget the rules and regulations of the laboratory, and all experimental items are not allowed to be entered!"

"Hehe, I remember naturally, but butter doesn't count. It comes from the kitchen. What do you want butter to make? This thing can only be cooked..." The young alchemist shrank his neck and smiled.

"Now, a Japanese man came to experiment with a saponification reaction. If it succeeds, it can be made, which can be used to bathe and wash and remove dirt..."

A group of alchemists looked at each other, and the director of Xianfeng Taoist even twitched slightly and said, "Mr. Marquis, you said chemistry is a profound science and has great future application prospects, but what you are studying is either perfume or bathing and laundry. This... this seems to be of little use, right?"

"Yes, yes, marquis, we don't have any face when we go out now. Although perfume is good, they are all things used by women. They cannot be used on the table. They are far less respectful than refining potions!" A group of alchemists nodded and agreed.

"You know, you just don't even touch the depth of chemistry, and you just start talking about uselessness. There is no useless knowledge in the world, only stupid and short-sighted ideas. The magic of chemistry is not what you see now. It's just that you have contacted too little and progressed too slowly, which makes many of my thoughts unable to succeed..."

While speaking, Chen Xu put some butter and alkali into the flask together and put them on the iron rack, and ordered a priest to turn on the coal stove and stir gently while heating.

Saponification reaction is learned in high school chemistry. It is to put animal or vegetable oil in a vessel and mix it with strong alkali and heat it for hydrolysis. Strong alkali is generally potassium hydroxide or sodium hydroxide. The products obtained are slightly different depending on the degree of saponification reaction, but they will not affect the results. Because this process is actually a very simple heating reaction, and it is not much different from distilled essential oils. The only thing is to constantly summarize experience through experiments to see how much oil and how much alkali liquid is added to finally get the best saponification effect, so that the minimum output value can be consumed.

At present, Chen Xu cannot calculate the molecular formula of the saponification reaction, because the chemical reaction components of organic and inorganic substances are not fixed. Just like petroleum and gasoline and diesel extraction, it can only define a rough comprehensive value by controlling the reaction temperature and the number of catalysts, and it is impossible to obtain a single organic compound.

Chen Xu’s purpose today is to let these alchemists see what saponification reaction is.

The saponification process is very slow, and continuous stirring can speed up the reaction speed. So a group of alchemists gathered around Chen Xu and watched with their eyes fixed on each other. After more than ten minutes, as the temperature rose and the continuous stirring, the yellow butter melted and mixed with the alkali liquid, emitting a strange smell.

"Shut the fire down, and go open the window!" Chen Xu felt that he was so frightened by the smell that he couldn't open his eyes. It was so pungent.

Soon half an hour passed, and the stirring alchemy changed two. At this time, the lye and butter in the flask had slowly begun to merge, but most of them were still a viscous oil mixture.

"Mr. Marquis, it seems that the saponification reaction is very slow, and it is as time-consuming as refining flower essential oil!" said a priest.

"Well, the saponification reaction temperature should not be too high, otherwise the grease will burn. The smell just now is caused by the high temperature. Control the temperature and continue to stir. Let me turn around!"

The lab smelled bad, and Chen Xu was too lazy to stay in the laboratory, so he went out to wander around the engineering school with his hands behind his back, went outside the classroom to inspect the students' class, and experience the prestige of the director.

So Chen Xu walked along the way. Many students and professors and professors from the School of Engineering quickly bowed respectfully after seeing this. Seeing Chen Xu wandering around the college and refused to leave, the school officials who were not sure about it quickly ran to the construction site in the south of the city and called the vice dean Hu Kuan back.

After half an hour, Hu Kuan hurried to the college with sweat and hurriedly, he learned that Chen Xu was just bored and wandering around, and he was amused and laughed. However, as the dean of the School of Engineering, Chen Xu finally came to inspect it. Hu Kuan was still very happy. He asked the college canteen to prepare a few exquisite dishes and personally brought two glasses of golden-red tiger whip wolfberry wine. The two of them ate and chatted in the private room of the canteen. When Chen Xu came to the laboratory with a full meal and drunken meal, it was already late noon.

"Himmer~" Chen Xu burped a big burp and walked into the laboratory with great warmth and comfort. He saw a group of alchemists sitting or squatting around the stove to keep warm. A young alchemist was slowly stirring the flask on the shelf.

"Mr. Marquis, see if the saponification reaction has been completed?" Seeing Chen Xu coming, a group of heat quickly dissipated and surrounded him again.

Chen Xu looked carefully in the flask and it had turned into a cream-like paste at this time, but he could still see the three separate structures. The top layer of light yellow emulsified substance is obviously not butter. There is a thin layer of colorless and transparent liquid in the middle, and the bottom layer of turbid color, which should be the residual liquid left after the reaction of alkali water and fat.

Although Chen Xu could not remember the time required for the saponification reaction and the state after the reaction was completed, from the end of the Mao hour to the Institute of Technology, the preparation work was added on the way, and the heating was at least four hours now, and the state and time were roughly completed.

"Okay, okay, take off the flask and cool it for a while, find a piece of gauze to separate the above layer of paste and put it in the beaker!"

Under Chen Xu's command, several alchemists quickly prepared all the things they needed. After the flask was left to stand for ten minutes, they could see that the three layers of matter inside were separated more clearly. Under Chen Xu's command, the two alchemists carefully poured all the things in the flask on the gauze. After the oil and water were separated, only a light yellow semi-solidified substance was left on the gauze.

"Put all these paste into this beaker, and when it is completely solidified, it should be soap!" Chen Xu dipped it in his hand for a while, feeling that his fingers were sticky and slippery, which looked very similar to the shampoo.

"Mr. Marquis, isn't the rest useless? Take it and pour it out!" After finishing, a priest took a siege with a filtered oil and water beaker.

"Wait, there is another useful thing here!" Chen Xu quickly snatched the beaker back, picked up a dropper and sucked a little floating transparent liquid from it. He originally wanted to lick it himself, but he gave up quickly. He turned to the alchemist who had just said, "Touch out his hand!"

"Yes, Marquis!" The alchemist was not sure about it, but he still used to spread his palms. Chen Xu dripped a drop on the alchemist's palm and said with a smile: "Listen it and tell me what it tastes like?"

The alchemist opened his mouth and said, "Mr. Marquis, the laboratory stipulates that it is not necessary to try to test the preparation!"

"Bad, do you think I don't know. You haven't tasted anything in the laboratory!" Chen Xu curled his lips with a black look on his head, "But some things are toxic and they really can't be eaten, but this substance is not toxic and is very sweet, it's really delicious!"

"Mr. Marquis, this thing is made of alkaline water. Maybe there is alkali inside. After eating alkaline, the mouth is full of blisters..." A priest next to him said with his eyelids twitching.

"Don't worry, it's no longer alkaline now, just lick it..."

With Chen Xu's encouragement, the alchemist hesitated for a brief moment and licked his tongue in his palm. Then his body shook his eyes and yelled: "Not bad, marquis, it's really sweet, slap~"
Chapter completed!