Even if it is to wait until tomorrow, this speed is too fast, although Sun Ji and they don't believe it, it is so simple to complete, you know, whether it is foaming agent or cement, it will take several days. Pen, fun, and www.biquge.info

Recalling the whole process, compared to the previous two, it is not difficult to be simple, that is, dissolve the grease, dissolve the quicklime in the water, mix the two solutions together and stir, although the process of the intermediate reaction is slightly surprising, but the whole reaction is too simple.

Can these things that can be found everywhere in daily life make precious items?

Chemistry is like this, people who understand it feel very simple, people who don't understand it feel high, soap is the same, really know the principle, even in primitive society can do it, limestone can be seen everywhere, calcination can get quicklime, this is the simplest process of chemical reaction, oil, as long as there is on the animal, the two are mixed, after certain conditions, you get soap.

Even if Sun Ji and others don't believe it, the soap production process is over, everything is very smooth, Sun Ji and others help, saving a lot of manual work, especially the stirring process, if there is no them, Zhao Xin alone, I'm afraid that one time can complete three or five catties, it's good, not only the strength is insufficient, the danger increases.

Among them, if there is a trick, that is, to save several purification processes, the chemical industry looks simple, but in order to ensure quality and yield, the purity must reach a certain level, three or five catties of such a family workshop, you can ignore this, but to a certain extent, you must pay attention to.

In terms of purity, the help of ancient chemistry has greatly improved the purity of 3%, so that the chemical raw materials made by simple methods have reached the standard that can be used, and it is not large-scale production, but large-scale manual production, and the things produced cannot achieve high productivity, but in the end, the production of ordinary soap is very smooth, and all the base soap has entered the mold, only waiting for 24 hours later, the solidification is completed.

Sun Ji and the others are gone, and there is no excitement to see, Zhao Xin did not leave at this time, this is the interior of the mansion, the mansion has been closed at night, there are people guarding the next side, there is no need to worry about the problem, during this time, Sun Ji and the others put more time and energy on training, and they are also tired a lot.

Especially after knowing that the opponent prepared the killer weapon of the Baozhou Mutiny, for Zhao Xin's protection, it can be lowered by a grade, in the past, it was to avoid infiltrating Miaojiazhuang, but now, just keep it in the mansion, with the killer weapon of the Baozhou Mutiny, how can they do such a thankless infiltration.

Of course, the household registration system and population registration, the power shown, is also the fundamental reason for Sun Ji to rest assured, there are no photos, but from the group training, to the villagers of Miaojiazhuang, the basic information of everyone is completely recorded, with these, unless it is a complete disguise, otherwise, there is no way to mix into Miaojiazhuang, everyone in Miaojiazhuang is registered, a day or two, maybe you will not find out, there is more time, there is nothing to hide.

A few candles were lit in the house, even in the dark night it was quite bright, the appearance of candles brought light, but also made the nightlife of the Northern Song Dynasty more abundant, as the world's first population of more than one million, at the same time, known as the city that never sleeps, Bianliang of the Northern Song Dynasty, in fact, has had the prosperity of later generations.

The price of candles is not low, in Baozhou, in addition to some eunuchs and landlord families, other poor farmers, few can afford to use it, but it doesn't matter to Zhao Xin, the bright environment makes him more handy in the experiment.

Something a little solid, has been poured into a few abrasives, 24 hours later, it will become soap, this, he quite believes, the card system, has given the answer, also lit up the second level of card soap, but this is an unfinished grade, and there is not even any practical use.

Just wait for a day, soap is a daily chemical product that is easy to make, the card system is lit, plus the formula in ancient chemistry, Zhao Xin is not worried, his main focus is still on the discarded liquid, which is also the fundamental reason why he stayed.

Saponification reaction, in addition to the production of soap, the by-product of the reaction, is glycerin, which, everyone knows, glycerin is widely used, is an important chemical raw material, and glycerin is also a drug for the treatment of heart disease, but the most important role of glycerin is the raw material of explosives.

Nitroglycerin, as a high explosive, can be higher than the T (N) T level, more powerful, and is now the easiest to manufacture high-yield explosives, of course, there is another one, that under the premise of insufficient raw materials, only samples can be produced, not mass production.

That's right, that's the famous nitrocellulose, which is widely used in modern explosives (), is the basis of propellant, can not be replaced for a long time, and the traditional sense of nitrocellulose to replace the commonly used black fire 0 powder, but also brought about the epoch-making progress of modern firearms, no need to clean the gun chamber, you can use the method of automatic loading, the firing speed of the firearm, will be greatly improved, and the projection force will also be greatly improved.

Compared with the simple manufacture of nitrocellulose, in the possession of concentrated nitric acid and concentrated sulfuric acid now, it can be made casually, as long as you are careful of danger, nitroglycerin, it seems to be more difficult, in the Northern Song Dynasty, if this can be extracted, it is quite critical to move from cold weapons to hot weapons.

This one doesn't look good, mixed with solid, dirty liquid, this is the best thing, there are too many impurities in it, containing a mixture of caustic soda solution, water, and glycerin, and some other impurities, it can be said that reactive impurities, unreacted substances, are all in it, glycerin is only a very insignificant little bit of it.

Zhao Xin sighed, and finally decided to try filtration, because there is ancient chemistry, 3% commission is very critical, and even in some reactions and purification, it can be extracted many times to eliminate impurities, as long as it is a reaction process.

This is also the secret that Zhao Xin discovered in the continuous chemical experiments, chemical experiments are a process of many times, reciprocating, and can be reacted and reversed, as long as you know the method of reversal, the modern chemical industry, to a certain extent, also uses this, multiple reactions, and cleans up the impurities again and again, and finally achieves higher purity.

He doesn't know the reversible process, but he knows the steps to clean up the impurities step by step, and uses the reaction and solidification method to clean up the impurities that have been generated.

Zhao Xin is just a student of the history department, chemistry knowledge is the beginning of high school, the beginning of high school chemical knowledge and some reactions in ancient chemistry, think about it carefully, let him summarize a simple purification method, that is, through the reaction, gradually remove impurities, 3% purification can be used in it, which he does not dare to guarantee.

I don't know how high the purity of glycerin is useful, and I don't know the difficulty, the easiest thing is to filter it to see how high it can be purified, maybe, there is a 90 percent, and then it will be increased by 3%, which is 93%, yes, it sounds, it should be enough.

In the mixed solution, there are a lot of impurities, some solid, filtered with copper mesh, and then filtered with cotton cloth, several layers of filtration, some insoluble substances are cleaned out, forming a relatively pure liquid; This liquid is a mixture of caustic soda, glycerin, and some oils, and the glycerol content has increased from about 3% to 10% at the beginning.

To remove these impurities, one-time definitely not, Zhao Xin does not know the chemical reaction of glycerin, can not be through the method of glycerin, to obtain pure glycerin, can only be excluded, the first use of acetic acid, neutralization of caustic soda, card system, the description of the content, played a considerable role, acid-base neutralization reaction, is the same amount of reaction, add a little bit of vinegar, then stir, then add, stir again, until the caustic soda in the solution, reduce to 3%, and then remove the impurities.

Acetic acid reacts with caustic alkali to generate sodium carbonate, through the crystallization method, remove the sodium carbonate, that is, soda ash, through crystallization filtration, remove soda ash, remove water with quicklime, when the remaining amount of water is not much, and then dehydrate with concentrated sulfuric acid, and finally obtain relatively pure glycerin.

This method, a total of many times, to get the current ability to manufacture higher purity glycerin, Zhao Xin's hands, no test equipment, glass containers, where is so easy to get, ancient chemistry in a total of 12 purifications, after removing a large number of impurities, in the final case also purified about 3%, not completely pure glycerin, up to about 85%, the remaining impurities, is no way to remove it.

These also light up a secondary glycerin, which is also an important raw material, in terms of function, it can be used to make explosives, as a special medicine for heart disease and some other simple effects.

Find a bottle of this thing and put it in the corner, this thing is an absolute dangerous product, even if Zhao Xin doesn't have much on hand, just a little bit can create a big explosion, concussion and falling, there will be a big explosion.

Glycerol has a relatively large effect on the future, and now, the effect is not too high. Zhao Xin didn't know how to make fried medicine from glycerin, at most, this thing that has been manufactured, the purity has not reached 9 percent, or even 9 percent 5, there are no toxic side effects, it can be used in the treatment of heart disease, and then it is not used, because there is no place to use it at all.

Coming out of the showroom, Zhao Xin's mood is still good, glycerin is extracted, maybe, there will be a use at some point, the most important thing is soap, as long as the manufacturing is completed tomorrow, this can be manufactured in large quantities, not many people use it, as long as a complete set of systems is summed up, to avoid danger, it is a big business similar to steamed buns.