My Post-Apocalyptic Shelter Levels Up Infinitely! Chapter 74: Magic saltpeter, in exchange for information!

【Saltpeter (excellent)】

Description: The high-purity saltpeter purified by the entry-level craftsman "Sumo" has a wide range of functions and can be used to make matches, pyrotechnics, black powder, glass and food preservatives, etc., because of inexplicable reasons , the grade has been raised to the excellent level.

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

Make gunpowder (energy +50%)

Made into fertilizer (fertility +25%)

....

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

The property page popped up by the system was refreshed by Nitpeter's special ability for the first time.

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

But this is not what surprised Su Mo the most.

"It turns out that mixing phantom energy water with these things will produce so many changes?"

Fiddled with the saltpetre in the beaker in surprise, Su Mo still couldn't understand how this thing had so many properties.

"But..."

"If the system is really as powerful as it says, I'm afraid my technology tree will skyrocket!"

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

Originally, after this wave of saltpeter and sulfur was purified and mixed with charcoal, the famous black powder could be produced, directly entering the age of firearms.

But now, an abrupt term popped up in Su Mo's mind-

"Picric acid!"

As the famous "Nymphene Dynamite" (TNP), it is also known as "Picric Dynamite".

Its ingredient is "trinitrophenol", which is often confused with Nobel's "safe explosive", "TNT".

In 1771, the British Peter Wolfe synthesized a dye.

He mixed concentrated sulfuric acid, nitric acid and phenol (probably refined coal tar crude phenol or indigo, people at the time did not know phenol) and obtained a bright yellow crystalline powder with a strong bitter taste. So it was given the name "picric acid".

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

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

In 1871, the guys in a dye shop in Paris, France encountered a problem. There was a backlog of yellow dye tanks that seemed to be rusted to death, and they couldn’t be unscrewed anyway, so the guys who were in a hurry decided to use the simplest and rude method. Open the can - smash it!

And the hammersmith I found was a big hammer of 80 yuan.

This time, the hammersmith had enough strength to go down with the hammer!

Unexpectedly, the jar exploded with a "boom", and the whole dyeing workshop was immediately taken off by an earth plane, leaving only a group of colorful survivors groaning in the ruins.

After many investigations, people ruled out the factor of unknown explosives hidden in the jar, and locked the problem on the picric acid jar, and people suddenly realized--

"The yellow paint was hammered and detonated!!!"

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

But the French military at that time saw it brightly. This is clearly the best military weapon sent from heaven. The "yellow color" has proved its safety in long-term use. Scale preparation.

Subsequently, the Frenchman "Eugene Turpin" took the lead in developing the "picric acid pressing method" for shells, and also gave it the name "Melinite", that is, "melinite".

This term is unfamiliar to many people, but everyone is familiar with the 1897-style 75mm field gun, which is Li Yunlong's "Italian gun"

Now there is saltpeter to produce nitric acid, sulfur and saltpeter can react to produce sulfuric acid, and some oil to extract the toluene inside...

"If it is really possible, I am afraid that my bomb technology tree will directly skip black powder and nitro gun cotton, and come directly to the era of yellow explosives!"

Thinking about the configuration methods of explosives that his father had been talking about before he came, Su Mo instantly became excited.

After all, black powder is just a propellant, and when it is made into a gunpowder bag, it can only complete the two processes of detonation-combustion.

Picric acid is different. Once the shock wave with chemical reaction is detonated, an explosive reaction will first occur at the initiation point to generate a large amount of high-temperature, high-pressure and high-speed airflow, which will stimulate the shock wave in the explosive.

The shock wave strongly compresses the adjacent explosive thin layer to cause the explosive reaction to generate a large amount of gas and heat, completing the detonation-boom-wave process.

Even if enough picric acid can be accumulated, it can be made into explosive packets and thrown into the kobold castle.

Under the detonation wave, it only takes one back and forth to let the Kobold know what justice is from heaven!

"Try to fix the oil well tomorrow!"

In front of the workbench, Su Mo stood up and sat down again and again, unable to calm down the agitation in his heart.

After pouring the purified 500g of saltpeter powder into a wooden container and putting it in the second bedroom, Sumo returned to the workbench again.

"I know the formula for purifying dynamite. I also learned the method of preparing nitric acid and sulfuric acid in high school. These are not problems. The key lies in the process of extracting toluene from petroleum and the process of mixing and reacting to form picric acid.."

"Back when Nobel made dynamite and killed his younger brother, although this picric acid is not as difficult as nitroglycerin, it may explode when it encounters high temperature, friction, and impact, and it can react with iron. Like mercury fulminate forming mercury salts, picric acid metal salts can be formed, causing accidental explosion hazards”

"Maybe I can get the preparation method of picric acid through the transaction information... I can get a better and safer method through the system upgrade!"

Having figured this out, Su Mo didn't hesitate, and directly called out the game panel to find the contact person.

After scanning all the friend lists, Su Mo finally set his sights on the line marked Shen Ke.

Focus and open the chat panel.

【Su Mo: Hello Shen Ke, do you have time to chat? I want to make a deal! 】

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

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

After connecting to the video, there was a sizzling sound on the screen, and Shen Ke's slightly tired pretty face appeared on the screen.

"Wow, Mr. Sumo, your shelter is developing so fast, it doesn't look like wasteland at all, but a bit like a brick house in my hometown!"

Bright lights.

Clean and tidy partitions.

In the distance of the lens, there are sparks and Oreos playing on the ground.

Looking at myself.

The dilapidated wooden house is still lit with homemade thick smoke torches, and through the window, it is pitch black.

From time to time, a gust of headwind blows, blowing black smoke into the room, causing people to cough.

"Where is it, I was lucky to make some achievements, which are nothing compared to you." With a wave of his hand, Su Mo quickly ended the courtesy time and got straight to the point.

"I want to make a deal with you guys, you know the yellow dynamite, it's picric acid, I think there should be someone from you who knows the formula and preparation method?"

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

After all, this thing is not too difficult. Compared with TNT, Hexokin or Cloud Bomb, yellow explosives are basically not difficult as long as there are raw materials.

But what this thing lacks is the raw material!

Back then, ancient China failed to develop explosives, the reason being that oil was difficult to extract.

Not all places have oil. As a top-level strategic material, it is obvious that there is no exploration near Shen Ke's shelter.

"Ahem, this raw material, I opened it from the treasure chest, and I just want to make some explosives for self-defense because I have some storage."

Su Mo didn't change his expression, he opened his eyes and talked nonsense.

But there is no need to explain too much, everyone is just trading, so stop here.

Shen Ke on the opposite side nodded: "Then what about the trade item this time? Is it phantom water?"

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

"This...I'm afraid I can't make the decision, I need to ask the higher-ups for instructions." Shen Ke looked embarrassed, and hung up the phone after receiving Su Mo's consent.

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

"Hello, Sumo, we have approved your deal. You just need to tell us the information about the alien creature, whether we know it or not, and I will give you the complete formula and preparation method at the right time"

Nodding his head, Su Mo was not afraid to run to the other side, and straightforwardly told the information about the warrior kobold, the warlock kobold, and the white-robed kobold that he hadn't figured out yet.

During this process, Su Mo concealed some details of the battle, but only told about the warlock kobold's spellcasting method, the warrior kobold's combat power, and the information that the kobold brought with it when it arrived.

The four recorders were writing furiously. From the video, Su Mo could observe the shock on their faces as more and more information flowed out.

Even the serious middle-aged man sitting on the left asked several details over and over again during the process.

"Okay, Su Mo, thank you for your contribution to mankind~IndoMTL.com~ Your information is very useful, and this information will gradually spread out in China Refuge, do you have any objections to this?"

"No, no..." After finishing speaking, several people hurriedly stood up, and Shen Ke sat back down again.

While the opposite side was preparing bitter sour, the two also began to chat with each other.

"By the way, Shen Ke, what is the identity of the person sitting on the right just now? It feels a bit weird." After changing the topic a few times, Su Mo changed the subject and asked about the doubt just now.

The man on the left was vigorous and resolute, and his sitting posture was correct. The man on the right looked a little bit like that at first, but sat loosely within a few minutes.

"The biggest doubt is that when I mentioned the kobold information just now, although he looked shocked, in fact, his micro-expression seems to be a look that he has already known..."

"Oh? You mean President Ying? Ying Tianlong is the president of the Civil Self-Help Association. Their family is relatively large. When they came here, more than 20 people were thrown together. We "Tundra" took refuge So the current main force!" Shen Ke said with a naive smile, without concealing it.

"Tundra?"

"Well! This is the name of our refuge. Of course, if we can still get the first place in disaster resistance next time, we will still use the name Huaxia. This title can only be used by the number one refuge. Other times we They are all called tundra..”

"Is that so..." After getting the desired news, Su Mo immediately changed the subject and chatted about some aspects of life.

After a while, Shen Ke's transaction request popped up.

Looking at the flow chart that completely recorded the dynamite in the transaction item, Su Mo smiled under the light.

With a flash of light, two pieces of paper filled with words appeared in front of the work table!