Chapter 74

[saltpeter (excellent)]

Description: the high-purity saltpeter purified by the quasi entry-level craftsman "sumo" has a wide range of functions. It can be used to make matches, pyrotechnics, black powder, glass, food preservatives and other purposes. For inexplicable reasons, the grade has been upgraded to the excellent level.

Special ability: make nitric acid (concentration (95% ↑)

Make gunpowder (energy +50%)

Make fertilizer (fertility +25%)

....

Evaluation: it has many uses, a wide range and quick results! Just hang up? (righteous words!)

The property page popped out of the system was brushed by the special ability of saltpeter for the first time.

There are more than 30 uses in all aspects, which have been strengthened to a certain extent.

But this is not what surprised Su mo the most.

"It turns out that there will be so many changes when you mix the water with these things?"

Surprised to play with the saltpeter in the beaker, sumo still couldn't see how this thing had so many characteristics.

"But..."

"If the system says it's so powerful, I'm afraid my technology tree will soar!"

Staring at the saltpeter powder, Su Mo's thoughts have drifted to the oil well in the No. 2 shelter.

Originally, this wave of purified saltpeter and sulfur, mixed with charcoal, could produce the famous black powder, directly entering the firearm era.

But now, a sudden noun jumped out of sumo's mind-

"Picric acid!"

As the famous "yellow explosive" (TNP), it is also known as "picric acid explosive".

Its composition is "trinitrophenol", which is often confused with Nobel's "safety explosive" and "TNT".

In 1771, the British Peter Wolf synthesized a dye.

He mixed concentrated sulfuric acid, nitric acid and phenol (maybe refined coal tar crude phenol or Indigo, people at that time did not know phenol) to obtain a crystal powder with a strong bitter taste and bright yellow appearance, so it was given the name "picric acid".

At that time, people only used picric acid to dye clothes and paint.

In the dye industry at that time, the name of trinitrophenol was often "yellow". People used picric acid to dye cloth for 100 years, but never thought about how to fry it.

In 1871, a clerk in a dye shop in Paris, France, encountered a problem. A backlog of yellow dye cans seemed to rust to death and could not be unscrewed anyway, so the anxious guys decided to open the cans in the simplest and crudest way - smash!

And the hammer maker I found is a big hammer of 80 yuan.

This time, the hammer maker gathered enough strength and went down with a hammer!

Unexpectedly, the jar exploded with a bang, and the whole dye shop immediately took a dirt plane, leaving only a group of colorful survivors groaning in the ruins.

After many investigations, people ruled out the factor that unidentified explosives were hidden in the jar and locked the problem on the picric acid jar. People suddenly realized that--

"Yellow paint was detonated by hammering!!!"

This matter caused a sensation in the society, and people were worried about the "yellow color".

However, the French military at that time saw a bright light. It was clearly the best military weapon sent by heaven. The "yellow color" proved its safety in long-term use, and it could also be simply prepared on a large scale.

Later, the French "Eugene Turpin" took the lead in developing the "picric acid pressing method" of the shell, and also gave it the name of "Manning explosive", namely "melinite".

This term is unfamiliar to many people, but when it comes to the 1897 75mm field gun, everyone is familiar with it, that is, Li Yunlong's "Italian gun"

Now we have saltpeter to prepare nitric acid, sulfur and saltpeter to react to produce sulfuric acid, and then some oil to extract toluene inside

"If it's really possible, I'm afraid my bomb technology tree will directly cross the black powder, nitration cotton, and directly come to the era of yellow explosives!"

Thinking about those explosive configurations that Dad had been talking about before he came, Su Mo was instantly excited.

Black powder, in a word, is only a propellant. When it is made into a powder bag, it can only complete the two processes of explosion and ignition.

Unlike picric acid, once the shock wave with chemical reaction is detonated, the explosion reaction first occurs at the initiation point, resulting in a large number of high-temperature, high-pressure and high-speed airflow, which excites the shock wave in the explosive.

The shock wave strongly compresses the adjacent explosive thin layer, causing the explosive reaction, producing a large amount of gas and a large amount of heat, completing the detonation detonation wave process.

Even if enough picric acid can be accumulated, it can be made into a bomb and thrown into the Kobold castle.

Under the detonation wave, as long as a round trip, you can let the dog head know what is called justice from heaven!

"Try to repair the oil well tomorrow!"

In front of the workbench, Su Mo repeatedly stood up and sat down, and his inner agitation was difficult to calm.

Pour the purified 500g saltpeter powder into a wooden container and put it into the second bedroom. Su Mo returned to the workbench again.

"I know the equation of purifying yellow explosives. I have learned the methods of preparing nitric acid and sulfuric acid in high school. These are not problems. The key lies in the process of extracting toluene from oil and generating picric acid by mixing reaction

"In those days, Nobel made explosives and killed his brother. Although this picric acid is not as difficult as nitroglycerin, it may explode when encountering high temperature, friction and impact, and it can react with iron, which will produce picric acid gold salt like mercury fulminate to produce mercury salt, causing accident explosion danger."

"Maybe I can get the preparation method of picric acid through transaction intelligence... Through system upgrading, I can get a better and safer method!"

Having figured this out, Su Mo didn't hesitate. He directly called out the game panel and looked for contacts.

After scanning all the friends list, Su Mo finally focused on the line marked with Shen Ke.

Focus and open the chat panel.

[Su Mo: Hello, Shen Ke, do you have time to talk? I want to make a deal!]

After the news passed, Su Mo continued to sit in front of the workbench and waited quietly.

Sure enough, less than five seconds later, the video of Shen Ke opposite bounced over.

Connect the video, the picture sizzles, and Shen Ke's slightly tired pretty face appears on the opposite screen.

"Wow, Mr. sumo, your shelter is developing so fast that it doesn't look like waste soil at all, but rather like a brick house in my hometown!"

Bright light.

Clean and tidy partition.

In the distance of the camera, sparks and Orio are still playing on the ground.

Looking at yourself.

The shabby wooden house, with its homemade heavy fireworks, was dark through the window.

From time to time, an adverse wind blew black smoke into the room, causing people to cough.

"Where, where, I'm also lucky to make some achievements, which are not worth mentioning compared with you." waved his hand, Su Mo quickly ended the polite time and went straight to the topic.

"I want to make a deal with you. Yellow explosives, you know, is picric acid. I think someone there should know this formula and preparation method?"

"I know, this is not a problem. If it weren't for the lack of raw materials, we would have made it. Do you have raw materials nearby?" Shen Ke said it without thinking more.

After all, this thing is not difficult. Compared with TNT and RDX or cloud bombs behind, yellow explosives are basically not difficult as long as they have raw materials.

But what this thing lacks is raw materials!

The reason why ancient China failed to develop explosives in those days was that it was difficult to exploit oil.

Not all places have oil. As a top-level strategic material, it is obviously not explored near Shenke's shelter.

"Cough, this raw material, I opened it from the treasure chest, and now I have a little storage, so I want to make some explosives for self-defense."

Su Mo's face didn't change, and he was talking nonsense with his eyes open.

However, there is no need to explain too much, we are just trading, so far.

Shen Ke on the opposite side nodded, "what about the trading items this time? Is it still you Neng water?"

"No, this time I exchange information with you. There is information about alien creatures!" Su Mo smiled confidently and waved his hand.

"This... I'm afraid I can't be the master, so I need to ask for instructions from the top." Shen Ke was embarrassed and hung up after su Mo's consent.

After a while, when the phone was connected again, two middle-aged men with dignified faces were sitting opposite, and four recorders were sitting behind the man, looking at the camera nervously.

"Hello, sumo, we have passed your deal. Just tell us the intelligence of alien creatures. Whether we know it or not, we will give you a complete formula and preparation method at the right time."

Nodding, Su Mo was not afraid to run across the road, and straightforwardly told the intelligence of the warrior dog head, the warlock dog head, and the white robed dog head who had not been touched clearly.

In this process, sumo hid some details of the battle, only about the magic casting method of the warlock Kobold, the combat effectiveness of the warrior Kobold, and the intelligence that Kobold would bring supplies when they came.

The four recorders worked hard, and Su Mo could observe from the video the shock on their faces as more and more intelligence flowed out.

Even the serious middle-aged man sitting on the left repeatedly asked several details in the process.

"Well, Su Mo, thank you for your contribution to mankind. Your information is very useful. These information will be gradually spread out in the Huaxia refuge. Do you have any opinion about this?"

"No, no..." After saying that, several people hurriedly stood up, and Shen Ke sat back.

Taking advantage of the preparation of picric acid opposite, the two people also began to chat with each other.

"By the way, Shen Ke, what's the identity of the person sitting on the right just now? I feel a little strange." after a few waves of conversation, Su Mo turned around and asked about his doubts just now.

The man on the left walked vigorously and sat upright, while the man on the right sat loosely after a few minutes.

"The biggest doubt is that when I said the Kobold intelligence just now, although his face was shocked, in fact, his micro expression seemed to be a look that he had already known..."

"Oh? You say Ying Tianlong? He is the president of the folk self rescue association. Their family is relatively large. When they came, more than 20 people were thrown together, which is the current main force of our" tundra "shelter!" Shen Ke smiled foolishly and said without concealment.

"Tundra?"

"Well, this is the name of our shelter. Of course, if we can get the first place in the fight against disasters next time, we will still use the name of Huaxia. This title is only available for the first shelter. We call it tundra at other times..."

"Well..." When he got the news he wanted, Su Mo immediately changed the topic and talked about some aspects of life.

After a while, Shen Ke's transaction request bounced over.

Looking at the flow chart of yellow explosives completely recorded in the trading items, Su Mo smiled under the light.

With a flash of light, two pieces of paper full of words appeared in front of the desk!