West, border town.

The washing stones purchased from Yingguang City were filled with four boats, and it took several days to unload.

Now that there are enough raw materials, the soap production plan should be officially put on the agenda.

The supporting plant and warehouse have long been completed - the soap factory is located next to the industrial park, next to the No. 2 steam assembly plant, the shape is exactly the same.The roof, beams and walls are all wooden structures, the size is small, and the wood cutting and hoisting work are the responsibility of the witch, so the construction period takes only a short week.

The use of washing stone, that is, natural alkali, to make soap, is essentially a series of chemical reactions.The raw materials required are also very common, in addition to soda ash, also need a lot of lime milk and grease.Among them, lime milk is immersed in lime water, precipitated in the bottom of the container of the hanging liquid, used to form caustic soda and soda, and then by caustic soda and oil reaction, the formation of high-grade fatty acid and glycerine.The former is even soap, while the latter is an extremely important raw material for explosives.

When making soap, Roland had experimented with a full reaction process in the castle’s backyard.The principle is basically the same, but to expand a small number of trial production to mass production, it is still necessary to develop reasonable processes and specifications, and more importantly, professional chemical personnel are needed to guide production.

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

"Your Highness, you have requested a large-scale production of sulfuric acid, and I have come up with a plan that may be feasible."As soon as he entered the door, Kemo Squear shouted, "But this requires a lot of lead, and the blacksmith who made the lead into a container, and heard that there is someone in your witch who can cut the metal accurately, and the rumbling iron beprius is what she has made, can I..."

"Of course, give me the shape and size of the container you have asked for me, and I will let the Witch League do it," Roland beckoned to him to sit down. "I'm not looking for you today for acid, but for another task."

“Your Highness, I really can’t take the time to do anything else,” Kemorian shook his head. “Mass-scale acid production is a difficult challenge, and I must go all out.”He paused and added, "Disciples can't do it, they're all helping me to prepare for this, and none of them can leave."

"Don't worry, you can't use too much time," Roland took a sip of tea, "and you don't need to put your proud disciples in charge, just a few apprentices."

“So... what’s the mission?”

"The manufacture of soap, is a cheap version of the soap in the convenience market, in addition to the taste, its function and soap is the same, can be used for bathing, cleaning clothes, and clean tableware."

“Is it the saponogenous reaction mentioned in the primary chemistry?”Camo felt the beard and said, “The one that produces alcohol and salt with sodium hydroxide and grease reaction?”

It must be said that it is a very strange feeling to hear from a gold refiner the standard chemical noun, especially the word was created by itself.Roland resisted laughing and nodded, "Yes, it is the saponification reaction recorded in the ancient books."I also groped the way soap was made on the basis of it.”

“So what do you need me to do?If it is not very important, I recommend it later.After all, your consuls are fine even if they don't bathe for several days, and clothes and dinner plates, they soak directly in the river."

“It is very important,” the prince stressed, “or rather, the manufacture of soap is not important, but the by-products of the production process are something I urgently need right now.”

“You mean the mellow?”Kemo disagreed.

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

"Well," shrugged Caimo Squeer, "but then I don't have time to carry it out myself."

He gently exhaled, dealing with the chief alchemist is really a tiring thing, "you just pick out a few clever apprentices, in front of them to demonstrate it again."I'm going to recruit some people to produce, but they don't know anything about chemistry, so someone has to check all the links."The prince paused a little, “You can also think of it as a chemical experiment that has never been practiced before – if placed in an alchemy workshop, this process can mean the discovery of several alchemy formulas, enough to give an apprentice the title of an alchemist.”

Probably the last words persuaded Kemor, "If that's the case, I'll take an afternoon and teach your apprentice what you've arranged."

"Very well," Roland smiled, "you should also know that the most important thing in the production process is to produce a sufficient amount of sodium hydroxide," he wrote the reaction formula on paper - before the synthetic alkali process was invented, natural alkali is the most important raw material for alkali, the latter is mainly composed of sodium bicarbonate, heating can make it decomposed into sodium carbonate, carbon dioxide and water, because the raw materials are rich and the process is simple, so it is still used until modern times."The washing stone will be heated to decompose, soluble water, and filter, and a relatively pure sodium carbonate solution can be obtained."

"The next use with lime milk to co-heat, you can get sodium hydroxide solution, purification method you should easily think of," he wrote, "clarification, distillation, mixing, and then repeat this step until the concentration of the solution can be cooled after a large amount of crystallization can be precipitated."

These are the content of "primary chemistry", due to the large number of two alkali nicknames, easy to confuse (such as caustic soda, soda, soda, soda, soda, soda, soda, soda, etc.), but also the important knowledge point of the exam, he did not have much to back the textbook related content, so far remember clearly.

"I see," said the chief alchemist, looking at the reaction from beginning to end, "but your Highness, what about the grease?"

"I'll arrange for someone to send it to you."Animal fats are still expensive in this era, but after the last visit to the seed procurement trip brought olive tree seeds from the pendant ridge, the border town has a reliable source of vegetable oil.Although it is currently only cultivated on a small scale in the backyard of the castle, it is not a problem to harvest a pile of fruits a day.

The extraction of olive oil is also very simple, after the fruit matures with a physical cold squeeze can be oiled, and then filtered through the filter to remove debris and slag, you can get clear oil.

Finally, after briefly explaining the soap and the requirements for glycerine, Roland asked Camo Squeir to leave the office.

As a result, when the soap factory started, he had a stable access to glycerin.

And with glycerin, it means that the real smokeless launch* drug and powerful explosives are not far away from him.(Unfinished.