Chapter 215

The stone bear regretted the arsenic.

In his previous life, as a Xueba, he certainly knew how to prepare arsenic. He also knew that arsenic and mirabilite were the best decolorizing agent for glass.

But the problem is that Glauber's salt is easy to find, and there are some ready-made Glauber's salt in the tribe, but the arsenic is not easy to get.

Although there are a lot of arsenic in nature, most of them exist as sulfides or oxides. For example, realgar is arsenic tetrasulfide, orpiment is arsenic trisulfide, and arsenic is arsenic trioxide.

At present, there are many realgar, orpiment and arsenic. The former two can be found in nature, while the latter can be obtained by heating the realgar.

But the arsenic is not so easy to extract. It's not that it's hard to extract arsenic. On the contrary, it's easy to extract arsenic. But the problem is that a lot of highly toxic substances will be produced in the process of extracting arsenic. If you don't pay attention to it, it's easy to poison people in the process of extracting arsenic.

Seeing that the head of his family suddenly fell into a strange meditation, Agust hesitated for a long time, and then carefully whispered: "head, head..."

Agust's voice awakened the stone bear from his meditation. With an apologetic smile, he said, "let me, I'm sorry. I just thought of something." Then the stone bear waved his hand again, "let's not consider arsenic for the moment. Although it's good to use arsenic as a decolorizer, it's poisonous. If you don't pay attention to it, it's easy to be poisoned, so I was just thinking about not using it."

"Boss, I'm not afraid of poison, I can do a good job of protection..." when the boss said that there was no need for arsenic, Agust got worried first.

Stone bear simply waved his hand to interrupt Agust's words, and then very seriously said: "let me know that you are very interested in a new substance, but you have to understand that if you are interested, we can do it slowly in the future, but you can't do it without being sure because you are interested. In my eyes, your health is more important than anything."

This made the eyes of the four alchemists flash with an inexplicable brilliance, but Agust still wanted to argue that the stone bear stopped him.

"Let me tell you the truth, just now I said using arsenic as decolorizer is a very irresponsible statement. You are quite proficient in medicine, and naturally you know the toxicity of arsenic? "

AGUS nodded. Before the more toxic cyanide appeared, arsenic, which can be easily prepared, was the most famous poison in Europe.

"Arsenic is the main component of arsenic, but arsenic exists in the form of sulfide and oxide in nature. You should know realgar, right

Agust nodded again. Although he didn't know exactly what sulfide and oxide meant, he knew the stone bear wouldn't fool him.

Realgar is the sulfide of arsenic, and it is the most common arsenic sulfide in nature. Realgar can form orpiment when exposed to the sun. If realgar is heated, white smoke with garlic odor will appear. This kind of white smoke is arsenic, which is the oxide of arsenic. You should know all this, right

"I know that arsenic can be obtained by heating realgar, and realgar can be obtained by exposing realgar to the sun. Both realgar and arsenic are highly toxic." Agust's honest answer.

Although the other three alchemists didn't know about medicine, they also heard about the famous arsenic. They naturally kept a distance from this highly toxic substance.

Stone bear smile, "whether realgar or orpiment or arsenic are very good, but the elemental arsenic is very difficult to extract. And even if it can be refined, it is easy to produce highly toxic substances in the process of refining. If you don't pay attention, you will be poisoned. I don't want to poison you because of the extraction of elemental arsenic. Do you understand what I mean? "

"Chief, but I can extract arsenic. I know how to extract arsenic, and as long as I pay attention, I won't be poisoned."

With a smile, the stone bear waved his hand again and said, "I know you can extract arsenic. I also know that it's just to heat soap and orpiment together."

Agust a face saw ghost's expression, "boss, how do you know this kind of method?"

"Ha ha, why don't I know this method? More than 500 years ago, German alchemist Albert Magnus used this method to extract elemental arsenic from arsenic compounds. This method has been popular among your alchemists for a long time

Agust nodded, but he still had an incredible look in his eyes.

"Well, don't ask how I know. I can only tell you that I know almost everything you know, and I know a lot of things you don't know. Well, let's stop refining arsenic. Let's stop talking about it. In terms of your health and safety, you four are forbidden to tamper with these poisonous things. I don't want you to play yourself to death just after saving you from hell. "

Except for Agust, the other three alchemists all laughed, but Agust still had a sullen expression.

Stone bear knows why he is not happy. The alchemist of this age is of this virtue. It feels like there is a big lump of gold in front of him. You only need to take a step to get to the gold, but this lump of gold is covered in an indestructible bulletproof glass cabinet

"Well, let's not sulk. Decolorizer is not only arsenic, we can replace it with something else

"Ah? Chief, is there anything better than arsenic? "

The stone bear shook his head and said, "it's not so good to replace arsenic with something else, but it's definitely enough. Does mirabilite know? "

"Yes, there are many purified Mirabilite in our tribe? Chief, do you think mirabilite can replace arsenic? "

"You can't replace it, but with mirabilite, your glass won't be so ugly."

After a pause, Shi Xiong continued to explain: "in fact, the real chemical decolorizer is adding about 2 FA pounds of arsenic and about 5 FA pounds of mirabilite to 100 kilograms of raw materials for burning glass. The mixture of arsenic and mirabilite is the best decolorizer. But now we can't use arsenic. If we only use mirabilite, the effect may be worse, but it's not much worse. Even if there are different colors in the burned glass, there won't be a lot of them. It's no problem to use them as experimental equipment. "

No matter what kind of decolorizer is used, the fundamental purpose is to replace the iron ions in the liquid glass with high valent iron compounds, so that the glass will not produce green or blue.

Arsenic is a good decolorizer for glass, but it is not irreplaceable. At least mirabilite can decolorize the glass.