In three days, Han Gao successively made chemical appliances one by one, and looking at the transparent glassware on the desk, Han Gao felt a sense of accomplishment.

Glass already existed in the Tang Dynasty, to be precise, during the Warring States Period, China began to make its own glass. It's just that it is made of lead glass, which can hardly be transparent, and it has a nice name, called colored glass. What Jiang Wei did was lead-free glass, so it could be transparent.

And Han Gao felt that he could create a completely transparent glass, which was simply a tool that only immortals could use, although he didn't understand what it was for, but his limited wisdom still guessed, drinking? Dine? It's too extravagant, but if you sell it, how much can it be sold for?

Han Gao couldn't help but guess, only to see Jiang Wei pick up the glassware one by one, under his puzzled gaze, Jiang Wei put the glassware on the iron shelf, put in the limestone, and then put several glassware together in a strange posture. And tie the straps together with the removed cow tendons, and link the glassware together one by one. Han Gao said that he couldn't understand it at all.

In Datang, it is illegal to kill a cow, and Jiang Wei spent a lot of money to buy the dead cow.

There is no rubber tree in Datang, and Jiang Wei of Eucommia ulmoides gum cannot be obtained, and at present, beef tendon is the only solution to the problem of splicing chemical appliances.

Light a lamp and place it under the asbestos mesh to add a glass chemical utensil. Jiang Wei chose the first to make the chemical gas, carbon dioxide. In fact, this thing was made by a person named Zhang Hua in the Western Jin Dynasty, and it was very simple.

It can be obtained by calcining limestone at high temperatures, and since carbon dioxide is denser than air, it is only necessary to connect a gas collection cylinder with the mouth facing upwards to collect carbon dioxide.

After collecting the carbon dioxide, Jiang Wei took out the soda ash used to make glass, poured water and stirred, poured the carbon dioxide from the gas collection bottle into the blowing cylinder, and then blew in the carbon dioxide from the bottom. After carbonization drying.

Baking soda was obtained.

Looking at the white powder baking soda, Jiang Wei could finally say goodbye to his tone.

These days, the most uncomfortable thing for Jiang Wei is brushing his teeth, although he already has a toothbrush in Datang, it is very rough, but Jiang Wei does not dislike it. What I dislike is the thing I use to brush my teeth, which is salt. The method is to take a sip of salt first, and then take a sip of warm water, but this method does not brush it clean. Of course, ordinary people don't brush their teeth with salt.

It made him miserable for a long time, it was too salty.

With baking soda, that's all different.

Jiang Wei took the baking soda, poured in some water and stirred, put in the juice of some mint leaves, and then put some salt, and stirred again.

The long-lost mint-flavored toothpaste is achieved.

Baking soda is not only edible, but also has an efficient cleaning effect, coupled with some salt sterilization and disinfection and mint evacuation wind heat and fresh breath, it can be said to be a very good toothpaste product.

After Jiang Wei brushed his teeth, he sighed and couldn't help crying. Finally, I felt the feeling of refreshing breath for the first time in a long time, so I brought my sister back and forced her to brush her teeth.

When Ruoniang finished brushing her teeth, she suddenly felt that she was beautiful and her breath was fresh, and her little cousin Xu Lu smelled Ruoniang's tone, and immediately clamored to brush her teeth.

As a result, brushing teeth became popular in Xufu.

Xu Hui looked at the toothbrush in his hand, which his mother Jiang Hua had brought him. She was struggling, on the one hand, she didn't like Jiang Wei to do these tricks, and on the other hand, she did have a little tone in her mouth, which was the trouble of every ancient person.

As for the toothpaste that can clear her tone, to be honest, she is in an ambivalence that she is about to resist and want to use.

In the end, I couldn't resist the temptation to remove my breath.

When she finished brushing her teeth, she covered her mouth and sighed, she really felt that her breath problem was gone, and there was a good smell, she was happy in her heart, and then she felt a sense of frustration because of her happiness, and couldn't help biting her lower lip,

"Hmph, count yourself as a winner."

The breath is fresh, and the mood is particularly happy. Jiang Wei shook the cloth folding fan and sat leisurely on the Hu chair. Thinking about whether to make some toothpaste to sell? But thinking that salt was very expensive in this day and age, and there was no way to produce it in large quantities, I gave up. At this time, Ruoniang saw the cloth folding fan, and her eyes suddenly lit up.

"Brother, brother, what is this?"

"This one!"

Jiang Wei shook his fan very much, and with a "swish" sound, it opened like a peacock opening the screen.

"It's called a folding fan."

"Brother, give it to me, Ruo Niang wants to play."

Jiang Wei pinched her little face lovingly,

"Take it."

Ruoniang happily took the folding fan, but at this time, she saw Jiang Wei take out another one from the back waist, and with a "swish", she fanned it comfortably.

At this time, the chemical appliances had already been formed, and Jiang Wei wondered if he had begun to make a big move.

Although toothpaste cannot be produced in large quantities, glass can still be produced in large quantities. Sodium carbonate is not only found in miscanthus salt, but also in salt lakes. There is almost no shortage of sodium carbonate there to support the opening of a glass factory.

However, there is only one problem, and that is that there is no way to protect the industry. Jiang Wei thought about it, but gave up the idea of opening a glass factory for mass production, and instead took the exquisite route and customized it.

He thought about it, the jewelry that can be made of glass can't be complicated, and the simple ...... Well, it doesn't seem like there's anything ......

In the end, Jiang Wei gave Han Gao several tasks, first, to make a glass plate, the longer the better.

Second, he made a piece of glass and drew a diagram to illustrate the size for him. Both of the above.

Then Jiang Wei started his own chemical project, and the first thing he did was to make nitric acid.

Nitric acid has a wide range of uses, first, he wants to make a mirror, which requires nitric acid, which has been learned in middle school chemistry class with this experiment, called the "silver mirror reaction". Second, he wants to make film, which requires nitric acid, and third, art is an explosion. This requires nitric acid.

He really didn't have any interest in making something as simple as black powder, and making this thing lowered his IQ a bit.

To do it, it is also necessary to make TNT explosives, that is, trinitrotoluene. That's what makes it challenging. And, out of his own safety, he felt the need to make it. Even if you have thighs in the future, you need the ability to protect yourself, after all, it is better to rely on no one than on yourself.

Of course, one of the main reasons for making TNT explosives instead of black powder is that in this era, explosives cannot be copied by others, gunpowder is too simple and easy to copy, so it cannot become your most important weapon.

TNT explosives are the mainstream gunpowder of World War II, and its key factors are high power, high safety, and several factors of low cost, and it is known as the king of explosives. (As for the manufacturing method, the process will be explained in detail later in the manufacturing process.) )

In short, nitric acid is indispensable for everything.