In addition to being used as soap, sodium hydroxide also plays an important role in the paper industry. Due to its alkaline properties, it is used in the process of boiling and bleaching paper pages. It can not only speed up the speed of paper production, but also improve the quality of paper in a large span.

It can even be used to refine petroleum. Of course, with Zhu Zilong's current level of civil science, it can only be regarded as rough processing.

At this moment!

Zhu Zilong carefully put these rough-processed things in a porcelain bowl and put them aside, for fear of getting on his skin. Because once it comes into contact with the skin, it will decompose the fat in the skin, and the fire is more harmful than sulfuric acid.

Immediately after frying the lard, the sodium hydroxide solution is poured into the hot oil pan and stirred thoroughly, and gradually a magical chemical reaction is produced.

"Fortunately, fortunately, the process in the video is finally correct. Go on, go on! Zhu Zilong cheered himself up in his heart.

Then, he stirs the pan well and waits for it to cool down for some time. In this process, the salt brine is ground and mixed with water. This thing will decompose hydrogen chloride under the action of high temperature, and hydrogen chloride is soluble in water, which is commonly known as hydrochloric acid.

In the modern chemical industry, the most important chemical raw materials are "three acids and two alkalis". Two alkalis can be made by soil method, one of the strong acids, and the easiest way is to use brine to obtain.

After more than an hour, the lard in the pot has begun to react, and the oily yellow soapy object on the top layer has gradually solidified.

These are the most basic soaps, and if you add additives such as spices, you can turn them into soaps that are commonly used by modern people. Of course, with Zhu Zilong's level of five scum, the appearance of the soap will definitely not be too good-looking, nor will it be too pure.

However, it doesn't matter, it's only the first batch of experiments anyway. Thinking of this, Zhu Zilong threw the rouge in, so that the fragrance was there.

Looking at the fire, Zhu Zilong hurriedly used a utensil to pick out a pure part of the soap that had not yet completely solidified.

I thought to myself, let's press it into a square shape with my hand.

In the future, you can also extract the essential oil in the flowers and fruits to make the soap more aromatic. But now the time is limited, and the only way to do it is to use rouge.

After a few more moments, the cooled squares were finished. One by one, the soap is ready!

Immediately afterwards, Zhu Zilong fetched a basin of water and washed his hands with freshly made soap. It turned out to be the same as the modern soap produced by the original small workshop in the 21st century. Not only can you wash your hands more cleanly, but there is also a trace of soap on your hands.

"The fragrance is numb, but as a finished product for the first time, it is OK enough. It seems that I can start a soap workshop based on this! Zhu Zilong took the soap in his hand, put it under his nose and smelled it, and gave a 70-point evaluation.

After making the soap, there is still a lot of cloudy soap and alkaline waste liquid left in the oil pan.

If it was someone else, it would definitely be lost, but Zhu Zilong had seen a full set of videos on the Internet before. The title is called, "Look at how the cattle man kills multiple birds with one stone and turns waste into treasure!" 》

Therefore, Zhu Zilong fished out the turbid things inside and put them away, and recalled them. Continue to add the brine, try many pots, many times. Finally, it's working again!

Another pot of residual lard, which was not of high purity, changed again and gradually solidified.

These waste lards, with the addition of a small amount of hydrochloric acid, will form another substance.

Wax!

Of course, this level of wax cannot be compared with the candles used for lighting by modern industrial output.

However, if the object of comparison is only the oil lamp of the Song Dynasty, then it can be hanged.

This part of the fat undergoes an acidic reaction to produce wax. The same can be barely done, colorless, tasteless, smoke-free, and easy to bring, bright and stable, and so on.

Finally, Zhu Zi put away the previous harvest items and turned to look at the last few oil pots.

There is also the last third of the various waste liquid in the pot, which is something a little different from before.

If he hadn't watched similar online videos before, Zhu Zilong would definitely be the same as ordinary people, and he wouldn't know that this last thing could actually be turned into treasure. It's even a bit of a stone-to-gold!

If he just poured it out, it would be a violent thing!

Because these waste liquids contain natural glycerin, if the requirements are not high, it is not difficult to refine the crude grade!

It is used in a wide range of applications, such as industrial use, repurification and re-operation, and is used in the manufacture of nitroglycerin, alkyd resins and epoxy resins (one of the main raw materials for explosives). Of course, Zhu Zilong is not very good at this at present.

It is used in the textile and printing and dyeing industry to prepare lubricants, moisture absorbers, anti-wrinkle treatment agents for fabrics, diffusion agents and penetrants. This Zhu Zilong vaguely seems to have seen a similar local law video, which needs to be tested.

It is also used as an antifreeze agent for automobile and aircraft fuel and oil fields, which is purely a lifetime example and can be ignored. Don't expect Zhu Zilong to build a car in his lifetime.

In addition, glycerin is used as a sweetener in the food industry, well, to deceive the human tongue. Because different quality fruits contain different degrees of tannins, which are the source of bitterness and astringency in fruits.

Dosage: 0.8%~1% glycerol can quickly decompose the bitter and astringent odor in fruit juice and fruit vinegar drinks, enhance the thick taste and fragrance of the juice itself, and the appearance is bright, sweet and sour.

And there is no good high-level soju here in the Great Song Dynasty, and the literati usually drink a kind of rice wine and fruit wine, which is just right to try.

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Not only that, after diluting it with pure grain wine above 50 degrees, spray it evenly in the jerky or cut meat, and knead or stir it thoroughly. Dosage: 1.2%~1.5%

proportions, which can extend the shelf life, and it seems that the transportation of military rations is also good.

If you want to perform better on the sports field, glycerin is also a great supplement.

The reason for this is that when you have plenty of water in your body, your body is stronger and longer-lasting. Especially in high-temperature environments, glycerin's strong water retention helps the body store more water.

For people who do high-intensity physical training, glycerin may lead to better performance.

Of course, if you don't want too much glycerin. You can also take it to produce a small amount of monosodium glutamate, well, you don't know what monosodium glutamate is?

Neutralize to PH6.5 with sodium hydroxide or sodium carbonate powder (to be tested in multiple ways), and then decolorize and filter with activated carbon. Glutamate-sodium salt is obtained by concentration under reduced pressure, and crystals are separated.

In layman's terms, it is another meaning of monosodium glutamate. Of course, the purity of this kind of soil method is definitely not as strong as that of the modern 21st century.

However, for a society like the Song Dynasty that had no condiments at all to increase umami, it should be regarded as a treasure.

Wait until that day when Zhu Zilong can wait until the birth of chili peppers, and then with this, plus salt, he can barely fry dishes similar to what modern people like to eat.

Of course, modern dishes don't have to be like this, after all, Chinese recipe culture is profound!

I was busy for a while, and the simple distillation test, after N failures in the waste liquid residue. Finally, in the last test, Zhu Zilong got a decent purity, glycerin and a little alternative MSG.

Looking at the sky was almost dawn, Zhu Zilong, who hadn't slept all night, sighed with a relieved expression.

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