Western border, border town.

The washing stones purchased from Yinguang City filled four ships, and it took several days to unload them alone.

Now that there are sufficient raw materials, the soap production plan is officially put on the agenda.

The supporting factories and warehouses have been set up, soap factory is located next to the industrial park, next to the No. 2 steam assembly factory, and the shape is exactly the same. The roof, beams, columns and wall panels are all made of wooden structures, with a smaller size, and the witches are responsible for the wood cutting and hoisting work, so the construction period only took only one week.

The use of detergent stone, that is, natural alkali, to make soap is essentially a series of chemical reactions. The required raw materials are also very common. In addition to soda ash, a large amount of lime milk and oil are also required. Among them, lime milk is the suspension liquid precipitated at the bottom of the container after immersing lime in water. It is used to react with soda ash to form caustic soda, and then react with oil to produce higher fatty acid salts and glycerin. The former is even soap, while the latter is an extremely important explosive raw material.

When making soap, Roland had already tried a complete reaction process in the castle backyard. The principles were basically the same, but to expand the small amount of trial production into mass production, reasonable processes and specifications still need to be formulated. More importantly, professional chemical talents are needed to guide production.

To this end, he summoned the chief alchemist into the office.

"Your Highness, I have come up with a plan that you may have to do on a large scale of sulfuric acid." As soon as you entered the door, Kemo Strier shouted, "But this requires a lot of lead, and the blacksmith who made the lead into containers. I heard that someone in your witch can accurately cut metal. The rumbling iron lumps were made by her. Can I..."

"Of course, I will tell me the shape and size of the container you requested, and I will ask the Witch Alliance to do it," Roland waved and gestured to him to sit down, "I came to you today not to make acid, but another task."

"Your Highness, I really can't take time to do other things recently," Kaimo shook his head repeatedly. "Massive acid production is a difficult challenge, and I must do my best." He paused and added, "The disciples are not good either. They are all assisting me in preparing for this matter, and none of them can leave."

"Don't worry, it won't take too much time for you," Roland took a sip of tea. "You don't need to transfer your proud disciples to take charge, you only need a few apprentices."

"What is the mission?"

"Making soap is a cheap version of soap in the convenience market. In addition to its taste, its function is exactly the same as soap. It can be used for bathing, cleaning clothes, and cleaning tableware."

"It's the saponification reaction mentioned in "Elementary Chemistry"?" Kaimo said, touching his beard, "The one that uses sodium hydroxide to react with oil to produce alcohols and salts?"

It has to be said that it was a very strange feeling to hear standard chemical nouns from an alchemist, especially the word was created by himself. Roland held back his smile and nodded seriously, "That's right, it's the saponification reaction recorded in ancient books. I also found out how to make soap based on it."

"So what do you need me to do? If it is not very important, I suggest putting it in the future before giving birth. After all, it is fine if your subordinates don't take a bath for several days. Just soak your clothes and meal plates directly in the river."

“It’s very important,” the prince stressed, “or rather, it’s not important to make soap, but the by-products in the production process are something I need right now.”

"You mean... 陈?" Kaimo said disapprovingly.

"Yes, it's alcohol, you can also call it glycerin," said Roland. "It's an extremely important raw material, and its meaning is no less than two acids."

"Okay," Kaymo Strier shrugged, "but I've agreed, I don't have time to do it myself."

He let out a gentle breath, and it was really tiring to deal with the chief alchemist. "You just need to pick out a few smart apprentices and demonstrate it in front of them. I will recruit some leaders to produce, but they know nothing about chemistry after all, so someone must check all the links." The prince paused a little. "You can also treat it as a chemical experiment that has never been practiced. If placed in an alchemist workshop, this process can mean the discovery of several alchemist formulas, which is enough to allow an apprentice to win the title of alchemist."

It was probably the last sentence that convinced Kaimo, "If that's the case, I'll take an afternoon to teach the content you assigned to the apprentice."

"Very good," Roland smiled slightly, "You should also know that the most important thing in the production process is to produce enough sodium hydroxide," he wrote the reaction formula on paper. Before the synthesis of alkali was invented, natural alkali was the most important raw material for alkali making. The latter's main ingredient was sodium bicarbonate. Heating it can be decomposed into sodium carbonate, carbon dioxide and water. Because the raw materials are rich and the process is simple, it is still used until modern times. "Heat the detergent stone, dissolve water, and filter, and you can get a purer sodium carbonate solution."

"Next to use it to coheate with lime milk to get a sodium hydroxide solution. The purification method you should easily think of," he explained while writing, "Clear, distillate, mix, and repeat this step until the solution concentration can precipitate and crystallize in large quantities after cooling."

These are all the contents involved in "Elementary Chemistry". Because the two alkalis have many nicknames, they are very easy to be confused (such as caustic soda, kelp, soda, baking soda, soda, etc.), and are important knowledge points in the exam. He had memorized a lot of relevant content in the textbook at the beginning, so he still remembers them clearly.

"I get it," the chief alchemist looked at the reaction from beginning to end, "But your Highness, what should I do with grease?"

"I will arrange for someone to send these materials to you." Animal oils are still expensive in this era, but after the last time the seed procurement journey of Qinwei brought olive tree seeds from Zhulongling, Bianfeng Town had a reliable source of vegetable oil. Although it is currently only planted in the backyard of the castle, it is not a problem to harvest a bunch of fruits in a day.

The extraction of olive oil is also very simple. After the fruit is ripe, it can produce oil by using physical cold pressing. Then filter out the debris and residue through a filter to obtain clear oil.

Finally, after briefly explaining the requirements for soap preparation and glycerol retention, Roland asked Kemo Spier to leave the office.

In this way, when the soap factory started construction, he had a stable channel to obtain glycerin.

And with glycerol, it means that the real smokeless-free-launched drug and powerful explosives are also not far from him. (To be continued., Your support is my greatest motivation.)
Chapter completed!