In the impression of Chen Laoshi and his wife, salt is not only used to cook, but also to prepare tanning agents, which was also Chen Wanrong's invention. They could not imagine using salt to make soap, but a magical scene appeared in front of them, so they couldn't help but be so surprised that they were stupid.

It's strange that things that were originally impossible to beat even Baguan actually came true: some light yellow things like ointments appeared in the pot. For Chen and his wife who had no knowledge of chemistry, they appeared out of thin air, and their ability was too hard to imagine.

Looking at the surprised look of the two elders, Chen Wanrong understood their mood very much and explained: "Dad, mother, the addition of alkali just now was saponification. When the oil boiled in the alkali solution for a long time, it reached a closed state. I added salt now to separate the soap particles and water. This step is called salting analysis."

"Salt excrement?" Chen Hushi muttered: "Salt excrement is good, salt excision is good!" He was so shocked that he had not come back to his senses yet. This was too mechanical.

Chen Wangshi swallowed, and her throat made a gurgling sound, but she wanted to speak but couldn't speak.

Chen Wanrong continued to explain: "The more salt I add, the more it will precipitate." While saying that, the salt kept sprinkling into the pot. As Chen Wanrong said, there were more and more light yellow soap particles, and later a thick layer floated on it, like a golden pancake.

"So much?" Chen Wangshi came to her senses first, looked at the soap lily, and finally spoke.

"What did you say? It's better if you have too much, it's better if you have too much!" Chen Laoshi looked at the soap in the pot, his surprise had not yet disappeared.

Clapping his hands and putting the basin of salt aside, Chen Wanrong breathed a sigh of relief: "The salting analysis has been completed, and the next step is to separate the soap particles from the glycerin."

Chen Zhen couldn't help rubbing his hands and volunteered: "Wanrong, what should I do? You said, I did it!" A few very concise words expressed his excitement.

"Wanrong, tell me, mom listens to you." Chen Wangshi did not leave either.

After salting, the soap particles are in the upper layer and the lower layer is a mixture of glycerin and water, and the layering is very obvious. This situation is similar to the difference between tofu and water, so it is very simple to separate.

"Wanrong, can this bucket work?" Chen Laoshi didn't wait for Chen Wanrong to speak and put a clean bucket next to the stove.

As long as there is a container to hold soap pellets, Chen Wanrong picked up the scoop and scooped the soap pellets into the bucket. After scooping the soap pellets, Chen Laoshi quickly carried the bucket into the house. Chen Wanrong couldn't help but be curious and asked, "Dad, where are you carrying it?"

"Can this baby be kept outside? If you see it, it would be bad." Chen Zhongshi has seen Chen Wanrong's magical chemical engineering these days. A few days ago, making hot alkali and tanning agents are simply a pediatric department compared to making soap. How can you make soap soap soap soap be so amazing? Don't you think you know that this soap is definitely an amazing baby. Can you hide it well?

Halfway through it, he was too anxious. Chen Wanrong held back his smile: "Dad, don't take it away, you haven't finished it yet."

"Old man, Wanrong said that he hadn't finished yet, so he should bring it back." Chen Wanrong is now at the god level in Chen Wang's mind. What he said is dogma, and he should follow the truth and hurry up.

Chen Laoshi felt a little embarrassed. He kept saying a few times before he trotted back with the bucket and placed it carefully on the ground.

Glycerin is a major by-product of the soap industry. It has a wide range of uses. It can be used as medicine and used as a health product. Its effect is very good, and athletes need glycerin.

Of course, if there is nitric acid, a strong drug can be produced. The power of the ** is very powerful, much more powerful than the fire. If it appears in the Tang Dynasty, it will inevitably trigger a revolution and the pattern of war will undergo tremendous changes. The Tang Dynasty army was already good at fighting and was invincible. If it gets help from the **, it would be like adding wings to the tiger, and the Tang army would be even stronger.

These can only be a bright prospect. Under the current conditions, it is impossible to extract glycerol. Even if it is refined, without an industrial chain, its use is limited. More importantly, the ** is extremely unstable, and an explosion will occur if there is a slight vibration. The danger is very high, and if it is not good, an accident will occur.

It's a pity to keep it and throw it away. Chen Wanrong was in a dilemma for a moment. Looking at the boiling water rolling in the pot, it was difficult to make a decision. Chen Wanrong can't blame him for not having the determination. Anyone who knows the uses of glycerin will be the same as him and it will be difficult to make a choice.

Chen and his wife saw that Chen Wanrong didn't speak for a long time and didn't bother, so they stood quietly. After a while, Chen Wanrong still didn't move. Chen Wang touched Chen Wang and whispered Chen Wanrong, meaning that Chen Wang asked Chen Wang. Chen Wang gave him a blank look, meaning that he wanted to ask yourself, and asked carefully and tentatively: "Wanrong..."

Chen Wanrong woke up from his thoughts and said, "Forget it, don't keep it."

Although glycerin has a wide range of uses, it is not known when it will be refined. Besides, there is only a few things. If glycerin really needs to be refined, you can do it again. Chen Wanrong, who thinks about this festival, decided not to keep it.

The two elders seemed to have received the imperial edict, and with a whistle, they hurriedly carried the bucket to scoop the boiling water. Chen Wanrong hurriedly reminded: "Be careful, don't burn it." He grabbed the bucket from Chen Wangshi's hand: "Mom, take a rest, I'll do it."

"Wanrong, aren't it the same as you do as a mother?" Chen Wang was very happy with Chen Wanrong's thought of not wanting her to be tired and smiled.

Industrial wastewater is one of the "three wastes", but the exception is that glycerin can protect plants. If the plants protected by glycerin can grow well on saline-alkali land, Chen Wanrong is not worried about environmental pollution. He mentioned that the ditch in front of the house collapsed. The father and son ran several times in a row before they poured the wastewater away.

Put some clean water in, wash the pot a little, then put the soap pellets into the pot, add some water, and finally add two scoops of hot alkali solution. Chen Wang's fired to the top and started the alkaline analysis process.

There are two purposes of alkaline analysis. One is to add a certain amount of alkali to further saponify the residual fat and increase the saponification rate. The other is to wash away the remaining glycerin and pigment.

After the water boiled, Chen Wanrong let it cook. After about half an hour, he scooped the soap into a clean bucket and took the boiling water to pour it out.

Wash the pot, add water, add soap pellets, boil and heat. Cook for a while, separate the soap pellets from the water, and then add water to boil.

This is done to remove the remaining glycerin, hot alkali, pigment and soap glue. After boiling twice, the soap particles were already very even. Chen Wanrong knew that the heat was up, so he sprinkled the rosin into the pot and stirred it evenly with a stick.

After cooking for a while, the rosin smelled, and the fragrance scattered everywhere. It was refreshing when you smelled it. Chen Laoshi took a few sips: "It smells so fragrant! This rosin smells more fragrant than before!"

If you are in a good mood, you will be fine! He is in a very good mood today, so good that he can't even imagine it. Not to mention rosin, even a little bit of fragrance will be fragrant.

"You know, I don't know?" Chen Wang rolled his eyes.

The purpose of adding rosin is to increase the aroma, otherwise how should we call soap? There was no perfume in the Tang Dynasty, and there were no fragrances we use now. To increase the aroma, we can only use local materials and use easy-to-buy rosin.

If there is a flower bed, the season is right, pick some petals and mash them, and add the juice to it. Where can I get a flower bed in this extremely poor house? Chen Wanrong can only use rosin.

Put the mold and put it flat. Chen Wanrong scooped up the soap and poured it into the mold. Use a wooden board to smooth the soap in the mold, then put the lid on it, press it with your hands, and it is probably strong. Then divide a few stones into several points and put them on.

"Wanrong, that's all right?" Chen Wangshi stared at the mold and commented: "It's like making tofu!"

"Tofu? Can tofu be so good?" Chen Laoshi snorted, a little disdainful.

This busy work was really tiring. Chen Wanrong straightened up, shook his head, felt very comfortable, and said, "There is still something to do, it's not over yet."

Chen Laoshi was impatient and asked hurriedly: "Wanrong, what else should I do?"
Chapter completed!