Chemistry is about pH changes. Triac acid and dibasic acid, including sulfuric acid and nitric acid, are the basic raw materials for all chemical industries. Once these things are not available, there is no word for chemistry at all.

As the name suggests, glycerin and nitric acid are absolutely indispensable in making **. Unfortunately, there is no spot in Taohuayuan now, so Xu Changli can only rely on self-reliance to solve the shortage of materials. Relatively speaking, it is relatively easy to extract glycerin. The by-products after salt production are used to produce sodium hydroxide, and then separate glycerin from animal and plant fats, or directly use by-products in the soap manufacturing process to make glycerin, and it is much more troublesome to extract nitric acid. Xu Changli is struggling with the limited amount of soil nitric acid at hand, and it takes a lot of effort to get the nitric acid dose required for the preliminary experiment.

Just as Wu Han and Zhou Chen had an argument, the couple was busy fighting in the laboratory, Xu Changli, who was working very cautiously in the glass rod in his hand.

As a standard operating method as textbooks, Xu Changli tried to stir the solution in the beaker as softly as possible, carefully controlled the changes in water temperature, and ensured that the combination of glycerol and nitric acid was within a controllable range. It is important to know that behind him, Nobel Prize-winning explosives was set up. His younger brother was killed by accident in the factory when he was studying explosives, which shows how dangerous the synthesis of this substance is. Although chemists have summarized a complete set of safe operation procedures for manufacturing **, there will be no danger as long as the script is read.

However, now the poor laboratory in Peach Blossom Land is missing whatever it wants. The extreme shortage of test equipment has caused very high risks in the processing process. Xu Changli was afraid that he would follow the footsteps of his predecessors if he accidentally did, so he had to be more cautious.

If ** is the basic raw material for the production of explosives, mercury is an indispensable component in the production of fire hats. This chemical that ordinary people feel is unfamiliar with is more dangerous than the notorious **.

Until the outbreak of nuclear war, most of the guns and cannons on the earth were still inconspicuous small fire hats. With the mechanical force transmitted by the fire needle, they detonated explosive sensitive substances such as mercury or silver threate in the fire hat, and then ignited the launching medicine in the shell to produce rapidly expanding gas to shoot the warhead at high speed. This ancient design has been used for an extremely long time. Even during this period, the weapons and equipment used by humans have been updated for countless generations, and the technical level has also developed to the information age, but the fire hat, which seems to be the simplest and most fundamental technical link, has not changed much.

Synthesis of mercury looks simple, and mercury dissolves in nitric acid to produce mercury nitrate. The main raw materials required for synthesis are mercury, nitric acid, ethanol, a small amount of hydrochloric acid and copper. Of course, the actual operation process is not as easy as ordinary people's mouths. Any operation link requires the operator to maintain careful thinking and skillful operation techniques. Otherwise, those who do not believe in evil will immediately understand what it means to sit in a earthen plane to the sky, or to make a big artificial landscape with a "boom" sound.

Xu Changli completed the final arrangement with a trembling attitude. He looked at the thunder mercury condensed in the beaker with joy, and was so excited that he rushed out of the laboratory and shouted successfully. It can be imagined that the sound effects in the closed cave environment have always been good. Xu Changli shouted loudly and quickly attracted Wu Han who was taking a bath.

"Old Xu, is it done?"

Wu Han, who was rushing to come, was now wearing a bath towel around his lower body and a bath towel on his upper body. His hair was wet, as if he was soaking. However, Xu Changli didn't care about picking on Wu Han's dress and taste. He was excited about his first synthetic experiment. There are many firsts to miss in life. For Xu Changli, this experiment undoubtedly proved his own value of existence, and its significance was not comparable to those uncreative laboratory results in the past.

Looking at Wu Han with a blank expression, Xu Changli smiled more and more happily. He raised the beaker in his hand and said anxiously:

"It's done, this is the mercury that just synthesized."

After glanced at the silver-white unknown compound in the beaker, Wu Han nodded half-understanding or not, then he patted Xu Changli on the shoulder enthusiastically and said loudly:

"You have worked hard these days. Since the experiment has been successful, don't worry, take a good rest for two days! There are not many raw materials now, so we must first summarize our experience and then start mass production."

After hearing the sound, Xu Changli was a little surprised and said:

"This... Isn't you anxious to use it in Xin'an Town?"

Due to poor information exchange, Xu Changli was still unclear about the fruitful achievements of Wu Han's trip. Seeing this, Wu Han laughed and comforted Xu Changli and said:

"Hahaha, the guys in the west have started a war with a group of people in the north. I'm afraid they won't care about Xin'an Town within three or two days, so we have plenty of preparation time, so you don't have to worry."

After breakfast the next day

"Hao Min, how much food is left to stock?"

The day before, he spent a lot of time dealing with the housework that was entangled with Zhou Chen. The two sides failed to reach an agreement on giving birth, which made Zhou Chen very angry. Wu Han had to pay for it with all his energy. Today, he finally had time to take time to think about serious things. Hao Min was in charge of several warehouses in the Taohuayuan Scenic Area, and all the accounts of food were put in her heart. As soon as Wu Han asked, Hao Min immediately replied without thinking:

"All the mess is included, less than ten tons, what's wrong?"

Knowing the current situation of Taohuayuan, Wu Han nodded without comment and said:

"It's nothing, it's better to take a look at the inventory. Grain may be used in a while."

The grain storage in Peach Blossom Land was originally relatively abundant. The greenhouse expanded its area and various grain crops sown in the previous year were enough to provide thousands of people with food for more than a year. In theory, such a sufficient food reserve is already very stable, but the plan is not as fast as changes.

A large number of survivors found after the flood were urgently needed to provide assistance, so since the second half of last year, Wu Han sent food to other settlements one after another. Hao Min was used to this situation, and she nodded knowingly and did not ask any more questions. In Hao Min's opinion, Wu Han's requirement to count inventory was just a routine inventory. In the chaos, if he had food in his hand, he naturally didn't panic. Since he had figured out the outline of his own grain storage, Wu Han did not explain to Hao Min what the purpose of asking about the grain inventory. Anyway, the mine protection team was not in a hurry to get food, and Wu Han didn't need to take the initiative and cause unnecessary trouble. Moreover, trafficking in humans is not a glorious good thing, but it is hard to say.
Chapter completed!