How is mercury nitrate obtained?

Fang Jun didn't know, but although most of the chemistry knowledge has been returned to the chemistry teacher, it doesn't mean that he doesn't understand the meaning of the name of chemistry, since it is "mercury nitrate", as the name suggests, there must be nitric acid and mercury in it.

Mercury is very popular, and ordinary people don't know what it is, but those Taoist priests have been refining pills and medicines for thousands of years, and this thing is a must-have thing at home...... As for nitric acid, he can only remember that the world's earliest nitric acid was obtained by dry distillation of saltpeter, saltpeter is very common, and now there are glass containers, and it can be done by pumping clean air with a leather pump, and the conditions for dry distillation have been reached, as for the rest, it has to rely on these craftsmen in Datang to slowly experiment.

If technology is a tree, then as long as you grasp the trunk, you can always reach the top.

However, this tree is invisible, before grasping it, no one can see, countless times in the history of mankind someone grabbed this tree, but some people clinged to the branches, took a fork in the road, entered a dead end, and some people grabbed the trunk, all the way up, became a sage, achieved extraordinary achievements, and were called great men.

In front of Fang Jun, a traverser, this tree can really be seen and touched, he is not a scientist, but he knows how to climb this towering tree, not climbing branches, not taking forks in the road.

After finding a room, he drove everyone out, wrote down a rough list of how to make nitric acid, and when it reacted with mercury, it would get a white crystal, and warned that it was highly toxic and flammable......

handed over this "formula" to Liu, and ordered him to keep it strictly secret, and when recruiting craftsmen to make it, it should be divided into batches and times, and it was absolutely not allowed to be leaked.

Liu wiped the sweat from his palms, and took the pieces of paper tremblingly, his heart heavy.

This is a very heavy trust, but he is not very happy, because looking at Fang Jun's solemn expression, he knows that once he leaks this "secret recipe", with Fang Jun's temperament, even the emperor will not be able to protect himself, unless he changes his name and surname......

As the next head of the Hedong Liu family, is he willing to give up his family business for a secret recipe?

The answer is naturally no, so even if he dies, he must not leak this secret recipe.

Just glanced at the words on it a few times, especially those words such as saltpeter, mercury, etc., and was a little confused, Ai Ai asked, "Master Hou, this ...... What kind of Dan is refined? ”

"What kind of pill to refine?" Fang Jun was also confused: "Who said alchemy?" Take a closer look, what does it have to do with alchemy to get a white crystalline powder in the end? ”

Liu Dao: "Your Majesty ordered the monks of Tianzhu to refine the pill outside the Jinbiao Gate, and there are also many Taoist priests in the Taoist temple refining the pill in Zhongnan Mountain, and the lower officials have seen it, and the raw materials used are varied, but there seems to be such a thing as mercury, and saltpeter is also very common...... Are you really not alchemy? ”

The art of alchemy has been popular in ancient and modern times.

Although the raw materials of alchemy are ever-changing, there are also certain rules, such as the medicine of plants and trees, "if you boil it, it will be rotten, and if you bury it, it will rot", such as "Dansha burns into mercury, and accumulates and changes into dansha". That is to say, it is not possible to use Chinese herbs for alchemy, because they are perishable. When cinnabar is heated, it can be turned into mercury and sulfur, which in turn can be synthesized into cinnabar. Therefore, taking the elixir refined from cinnabar, human life is like cinnabar and mercury can change each other, and they can circulate back and forth, endlessly, and their youth will last forever.

This is the reason why the elixir of life is inseparable from cinnabar, and even in the recipe of several elixirs that spread in the Han Dynasty, it contains cinnabar, saltpeter, sulfur and other raw materials.

That's right, it's infinitely close to gunpowder......

Fang Jun said angrily: "Dan who refines a fart!" ”

Although arsenic can also be used as medicine, there are many prescriptions in Chinese medicine to fight poison with poison, but if you take cinnabar, mercury, and saltpeter all year round, you still want to live forever?

It's too slow!

Don't say anything else, the preservatives in the food packaging bag are okay to eat a few bags, what is your reaction?

The original main ingredient of that thing was saltpeter, and later the invention of chemical agents made it even more toxic......

But after thinking about it, the Taoist priests of this era are the best chemists, can you get a few Taoist priests to study mercury nitrate?

The idea was quickly dismissed.

The current Taoist priest is amazing, the Li Tang royal family respects Lao Tzu as an ancestor, admires Taoism, and the Taoist priest has his own halo, and no one dares to provoke easily. Especially those Taoist priests who know a little bit of alchemy, they are regarded as talents among talents, and they are no different from the treatment of the two bombs and one star father in later generations......

The progress of science and technology cannot be achieved overnight, but gradually and steadily, and there may be unexpected gains in the process of developing mercury nitrate.

*****

In the evening, Fang Jun rushed back to Lishan Farm, stayed alone in the study, and recorded the planting methods of corn, potatoes, sweet potatoes, peppers and other crops. The cultivation of seeds, the management of seedlings, and even when to plant, how to prepare ridges, how much fertilizer to fertilize, and how much water is needed...... No matter how big or small, I recorded it one by one by memory.

This trip to Shuozhou, I am afraid that it will be difficult to return in a short time, Xue Yantuo people dare to brave the heavy snow to press the border, the ambition is definitely not small, I am afraid that the attempt is not only to force the Tang Dynasty and relatives, whether there is a shadow of Goguryeo, it is not known.

This batch of seeds is of great significance, and it must be made to thrive in order to be able to breed enough seeds for large-scale cultivation, and after three or five years, ensure that most of the land in Datang can be planted with high-yield corn, sweet potatoes, and potatoes.

These must be arranged before leaving.

In fact, if it weren't for His Majesty Li Er's holy decree, Fang Jun would rather give up all his exploits, but also guard these seeds to the death, and keep the hope that these will feed countless Han people......

Fortunately, although the bureaucrats in Sinong Temple are of inferior level, they are not not doing their jobs, and Yin Yue, Si Nongqing, does not know the farming technology at all, but he is in the right position, and he treats the technical officials in the yamen very preferentially, and he also attaches great importance to these seeds cultivated in the greenhouse of Lishan.

Although the agricultural officials of Datang are limited to the times and have limited knowledge, they are all diligent and diligent, as long as Fang Jun is properly arranged, there are no omissions in all links, and how to deal with situations in advance, there will probably be no problems.

The footsteps beside him were soft, and a faint fragrance was in the nose.

Fang Jun looked up, and saw Xiao Shu'er coming in lightly, holding a tea cup in her hand, and when she saw Fang Jun who was awakened to think, she showed a sweet smile, stepped forward and put the tea cup on the table, and said softly: "It's late at night, you should go to bed early." ”

Fang Jun turned his head to look out the window, only to realize that the sky was already dark, but the lanterns hanging outside the window were swaying in the wind, the dim light illuminated the night sky, and the snowflakes still did not stop.

Wrapping around the soft and slender waist, he picked up the beautiful concubine and put it on his lap, leaned down and sniffed between the crystal white neck, and a fragrance like an orchid musk penetrated into his nose.

"The newlywed Yan'er is going to lead the army to the battle, but the lady is going to snub the boudoir and wronged you."

Fang Jun said softly.

"What did Lang Jun say?"

Xiao Shu'er snuggled her head in Fang Jun's arms, her face was close to his broad chest, listening to the powerful heartbeat, her arms wrapped around her thick waist, and her voice was soft and glutinous: "What girl doesn't have a heroic dream?" Once upon a time, Shu'er also fantasized that in the future, she would marry a hero who stood up to the sky, and her husband would smell the chicken and dance, so Shu'er would mix the spoon with her hands...... Now Shu'er is really married to a hero who stands up to the sky, but she finds that her previous fantasies are wrong, Shu'er would rather her husband be just a gentleman who has nothing to do with cockfighting and dog walking, in that way, at least she doesn't have to go to the frontier in the wind and snow, but fight to the death with the murderous Hu people......"

Hot tears rolled down, wetting the placket on Fang Jun's chest.

Fang Jun held his soft delicate body in his arms and said with a chuckle: "I don't know how to worry about it, and I go to Cuilou with makeup in winter." Suddenly, I saw a strange willow color, and the penitent husband was looking for a marquis...... It's just that he is a saint for his husband, he is a man of the Tang Dynasty, and now Hu Yikoubian, how can he stay out of the matter, enjoy joy at home, and embrace the beauty of the thrush? Jin Ge Iron Horse, resisting foreign insults, is the true color of my generation of men, and the righteousness is also where it lies. Moreover, as the husband is the commander-in-chief, he should stand in the Chinese army, and the left and right are full of robes and warriors, and the safety is naturally safe, and the lady can rest assured. ”

"I don't know how to worry about it, and I put on my makeup in the green building in winter. Suddenly, I saw a strange willow color, and the penitent husband was looking for the marquis......"

Xiao Shu'er muttered this poem in her mouth, as if a picture scroll was showing in front of her, a young young boudoir, always dreaming of marrying a big hero, staying until her husband went out in winter, a lonely person stepped on the embroidery building, and suddenly found that there were already willows and greens at the end of the path in the yard, but the husband who went out on the expedition still did not return......

Lonely and miserable, regretful and longing.

The penitent husband seeks the marquis......

What kind of man is this, he has both the strong masculinity of a man, and the delicate and mournful words, how many blessings have he cultivated in his previous life, and he can be with you in this life?

Xiao Shu'er raised her head, her eyes were full of love, her arms wrapped around Ailang's neck, her lips leaned up, and she murmured, "Erlang, want me......"