Chapter 8: The chemical composition of soap

"The time is too tight. The queen has sent three oracles one after another. I am afraid that your majesty is running out of time. The court needs the prince to go back and host the situation as soon as possible. We can save the prince and try to take her out of the city. Women only, we are cheaper to act, so we don’t have to be so scary."
Qin Laowu nodded, "Well... Brother said it rightly, the most important thing for us now is to send the prince out of the city as soon as possible... Hey, I don’t know if Uncle Liu has done something right."
Fu Tingye heard his words, his eyes became erratic, looking out the window
The scenery outside was grey and white, with layers of snow and chills.
"In the early days of Liao Bing Zhanxi, He, Mo, three states, from state to prefecture, city, town, village... Whether it is the judiciary or the chores, all need to be connected one by one, this layer is set one by one... It takes time and effort..."
Qin Laowu couldn't help being silent when he thought of the land under his feet and changing something silently.
"I hope this trip will be smooth..." Qin Laowu said.
...
At dawn, Hua Qingxue got up.
Li Jingnan rubbed his eyes and watched Hua Qingxue climbing out of the warm blanket in disbelief.
God...
The sun came out west?
Didn’t they get up just three days a day?
There is no way, it is too cold, even if you wake up, you have to squeeze in the bed and stare, then wait until the sun basks before crawling out to sunning.
Hua Qingxue shrunk one by one and put on clothes one by one.
In ancient clothes, she has been foolishly indistinguishable between linings and outerwears. Li Jingnan has given instructions several times, and she doesn't care about each time. Finally, she only remembers to wear light colors on the inside and dark colors on the outside.
It was too cold, and the clothes were cold and cold, and only a single coat warmed in advance was covered in the bed.
"Yesterday, there are leftover buns. You can use the stove to roast and eat. The pot was requisitioned by me." After Hua Qingxue was dressed, he braided himself while saying to Li Jingnan on the bed.
There was only one person's bed, as if it was not as warm as before. Li Jingnan tilted his head on the kang and asked her, "What are you doing?"
Hua Qingxue was in a good mood and smiled, "I'm going to make soap, didn't I say yesterday?"
Li Jingnan's eyes widened in an instant, looking at Hua Qingxue like a madman, "You said fragrant pancreas? Do you know how to do pancreas?"
Although Li Jingnan has no distinction between grains, he also knows that such things as incense pancakes are not affordable for ordinary people, as if not everyone can afford white rice.
Hua Qingxue shook his head with a smile, "I can't do it. I don't have spices and fragrances, I can only make ordinary ones, but it must be better than what you used before, and I bought sulfur. We can do it. Sulphur soap comes out, um! I will do more to sell it, and I will not be hungry anymore!"
After Hua Qingxue finished, picking up the pot behind the door and some things purchased yesterday, he happily went to the yard.
Li Jingnan naturally didn't sleep, and was very curious. He climbed up, and dressed himself in clothes and shoes. He rubbed and ran to the yard.
Hua Qingxue was pouring quick lime into the pot. When Li Jingnan ran out to join in the fun, she smiled a little embarrassedly, "I don't know if I can succeed... In principle, it should not be a problem, but I don't have a measuring cup on hand. Something can only be estimated."
Li Jingnan looked at the things in the pot and asked, "Is this about to start making pancreas?"
"Not yet, I need to get the sodium hydroxide out now..."
"Ah? What is that?"
"The ingredients of soap are sodium hydroxide and oil. As long as you get sodium hydroxide, the following things will be easier to handle."
Li Jingnan listened, and just seemed to understand, urged: "Then hurry up, I want to see!"
Hua Qingxue was rare and patient, she explained while operating: "We first need to calcinate quicklime, and then add water... You see, this becomes a lime slurry, the chemical composition of lime slurry is... forget it, you also I can’t remember, in short, add Glauber's salt at this time, well... so much lime slurry probably needs this amount of Glauber's salt..."
"Ah! Bubbly! Bubbly!" Li Jingnan saw the reaction in the pot and screamed!
"Don't stay so close!"
Hua Qingxue pulled Li Jingnan aside. He still stretched his head to look in the pot, and said in his mouth: "Hua Qingxue, shouldn't you be practicing alchemy..."
Hua Qingxue: "..."
Well, in fact, she thought about it. Ancient chemistry really started with those alchemists...
"This is a metathesis reaction between two things, and together they will produce calcium carbonate precipitation and sodium hydroxide."
"Where? Where?"
"Well, the precipitate in this pot is now calcium carbonate, and the rest is sodium hydroxide, which is well divided, and no secondary filtration is needed."
Li Jingnan looked suspiciously at the unknown objects in the pot and at Hua Qingxue. His expression was very puzzling. "Can this make pancreas?"
Hua Qingxue nodded affirmatively, "Well! Let me clean it up, you go to the house to get the oil first."
"Good!" Li Jingnan hurriedly went into the house, and after a while, came out holding the oil pot.
Hua Qingxue carefully separated the sodium hydroxide and the precipitate in the pot, and poured the sodium hydroxide back into the pot, scooped a spoonful of water from the bucket, and slowly poured it into the pot.
A violent reaction occurred immediately in the pot, and layers of smoke came out of the pot!
Hua Qingxue had already been prepared and immediately covered his nose and mouth. Li Jingnan also learned to cover half of his face. In the end, the child was difficult to get rid of. In the end, he secretly opened his mouth and took a breath. Tears!
Hua Qingxue could not care about him at this time, wrap a thick cloth in each of his hands, hold both sides of the pot while holding his breath, put it up all the way, and put it in the prepared water basin, which will drown half of the bottom of the pot.
"Sodium hydroxide will produce high temperature and smoke when it meets water, but it will only be about a minute, now we cool it."
"Then you can make a pancreas?" Li Jingnan asked her after wiping her nose.
Hua Qingxue shook her head. She waited quietly for a while, reached out and touched the outer edge of the pot carefully. Now in winter, the temperature drops quickly, and with the cold water soaking, the pot is not so hot.
After about forty degrees, when warm, you can refuel.
"Huh? What about the oil I asked you to take?"
Li Jingnan immediately pointed to the oil pot next to his finger.
Hua Qingxue immediately slapped on his ass!
"This is the oil we eat ourselves! I let you take the waste oil that Aunt Yan gave us!"
There are always a lot of waste oils left in restaurants and restaurants every day. These oils have been fried many times and mixed with many food residues. The color is brown and black, and it is no longer suitable for consumption.
You don't need to spend a penny on waste oil, it's most suitable for making soap.
Li Jingnan took a hit, frowned, and said, "I am a prince," then shrugged and ran back to the house, taking out the waste oil that Hua Qingxue said.
Hua Qingxue added oil to the completely dissolved sodium hydroxide and stirred with long chopsticks while adding. When tired, he changed to Li Jingnan.
"Don't change directions, always follow one direction."
Two people you change me for a while, I change you for a while, stirring continuously for about a quarter of an hour, the things in the pot have become like milk tea, and there is no oil on the surface.
Hua Qingxue took out several sea bowls, arranged them in a row by the pot, and poured the contents of the pot into the bowl one by one. After doing all this, Hua Qingxue clapped his hands and said, "Okay! Put it under the eaves in a place where the sun can't get it. It will be dry tomorrow, and then it will be cut into small pieces."
Li Jingnan looked forward, "Can tomorrow become a pancreas?"
Hua Qingxue laughed, "Well! But you have to wait a month before using it, the harder it is, the better it will be!"
Li Jingnan was shocked! "What are you doing! How could the Liao Bing wait for you for a month?!!!"
Hua Qingxue turned to look at him, dumbfounded, "I didn't plan to use pancreas to wash those military uniforms..."
Soap can only be used for a long time. One month is the shortest time estimated by Hua Qingxue. Even in the modern industrial era, the best time to sell handmade soap is three to six months after it is made.
Of course, if the soap products are produced in batches by machines, there is no need to wait for such a long time, and the price will therefore be much cheaper than handmade soaps.
The price of a commodity is always closely related to two things, one is whether its materials are scarce, and the other is the length of its production process.
Li Jingnan sometimes really has a headache for Hua Qingxue's slow half-beat brain circuit!
He said anxiously: "Since these things are not used to wash clothes... then what are you doing so hard?! You are not afraid of washing the clothes, do they give you a knife?!"
He wanted to say more: What time is it now! Why do you still have time to play pancreas? what? !
Hua Qingxue is not a half-beat, she is very smart, and she always has inexhaustible scientific knowledge in her mind, but the problem is that her thinking and cognition are different from Li Jingnan.
She must find a way to settle down as soon as possible, so that she can live well after she escapes with Li Jingnan.
Ren Qiu is too messy here. She hasn't had an accident so far. Apart from being very careful, she is more lucky.
The chaotic security, the erratic prices, and the tense and depressive breath that filled the city all the time, all of which made her want to go out of the city every moment...
Hua Qingxue started to clean up the pot and prepared another pot of soap mixed with sulfur, and answered Li Jingnan: "They don't need this for their clothes. They just need to use potato flour dipped in vinegar and apply it directly to the place. When the powder is dry, gently rub it, and the blood stains will be rubbed off with the potato powder... If it is still not clean, it is enough to rinse it with rotten radish and boiling water."
Li Jingnan stared, "It's that simple?"
Hua Qingxue's helpless hands spread, "Otherwise, how hard do you think it can be?"