Just when Lin Haoran almost lost hope in soap, he was ready to go to Guangzhou Mansion to take the exam at any time, but he couldn't have imagined that such a big pie would fall.

With an order of 10,000 taels, this is undoubtedly quite amazing, no wonder Shen Liuye will personally run this trip.

It's just that for these Francois who started by plundering, they do have such confidence.

The Ming Dynasty was not an important silver-producing country, and silver had just become the main currency in circulation, so silver was scarce. But not with these predators, and later data show that Spain plundered billions of taels of silver and nearly 100 million taels of gold from Latin America alone.

The next day, Lin Haoran sent Da Biao to use the carriage he had just bought to purchase raw materials, and almost the whole village revolved around this big project. He even brought back a few pigs and sheep from the county and had a big dinner in the barn every day.

The dyeing workshop was temporarily closed and turned into a soap workshop.

Lin Haoran asked Da Biao to take a few people to clean the salt water pool, fill it with clean water, and then let them guard the gate and not let anyone approach.

As pieces of quicklime were thrown into the water, only a "zing" sound was heard, and the water in that pool became muddy and hot.

The tiger girl watched from the side, her mouth opened with a smile, and then she turned her head to look at Lin Haoran suspiciously.

Quicklime will undergo a chemical reaction when it encounters water to form calcium hydroxide, commonly known as hydrated lime, and this chemical reaction process will produce exothermic phenomena, which will be strange to people who see this phenomenon for the first time.

Lin Haoran scratched his head, but he didn't know how to explain this exothermic phenomenon, and finally explained it with "some things will get wet when they are put in water, and some things will not, the hot iron will become cold in the water, and the quicklime will become hot in the water".

Hu Niu thought for a while, nodded seriously, and secretly wrote down such a magical thing as quicklime.

Lin Haoran poured an appropriate amount of soda ash into the pool, which is known locally as alkali noodles. There are two sources of soda ash, one is natural alkali mineral, and the other is oxaline from plants, but I don't know which kind of soda ash these soda ash belong to.

The steamed bun shop can provide a channel to buy this kind of thing, and the price cannot be said to be very cheap, but it is not too expensive.

After adding soda ash, the exothermic effect is more obvious, and a large white water vapor is rising, which spreads in the dyeing workshop.

The advantage of the tiger girl's shortness is reflected, and when she looks at the white vapor in amazement, the other two hide far away. Da Biao, who was guarding outside, asked loudly with some concern, and the old patriarch immediately reprimanded him, asking him to lead people to continue to guard the gate.

Worried that the reaction was not sufficient, Lin Haoran asked Hu Niu to take some water, and poured it into the salt water pool while stirring. Tiger Niu looked fun, so she helped him stir together.

The main chemical component of hydrated lime is calcium hydroxide, which undergoes a chemical reaction with sodium soda ash to produce calcium carbonate and sodium hydroxide. Calcium carbonate is a sediment that slowly settles to the bottom, and the supernatant is a solution of sodium hydroxide, commonly known as caustic soda.

These solutions of caustic soda are exactly what Lin Haoran needs.

The caustic soda is carefully filtered with a filter bucket, mainly using a muslin cloth to filter out the solid sediment calcium carbonate in the solution, and the caustic soda is packed into several wooden barrels.

Lin Haoran heated half a pot of caustic soda, waited for the caustic soda to boil slowly, and then poured the purchased soybean oil into the caustic soda, and stirred it continuously with a wooden spoon.

Grease and caustic soda undergo saponification, which is actually a slower chemical reaction. If you want to speed up the reaction, in addition to keeping the temperature high, you can also choose to add the right amount of alcohol.

A layer of viscous liquid slowly appeared on the top of the iron pot, and these viscous liquids were the soap that Lin Haoran wanted.

After about half a pillar of incense, there is more and more viscous liquid, but there is still soybean oil remaining. Lin Haoran naturally understood that this was a manifestation of insufficient reaction, and added caustic soda and continued to stir until the viscous substance no longer left soybean oil.

These sticky substances are actually already soaps, but after cooling, they can only get gelatinous soap with low purity, which needs to be kept in a container for use, which is not convenient.

Lin Haoran asked Hu Niu to bring salt water again, and added it directly to these viscous bodies. This will not only separate some impurities, but also obtain a solid soap.

The old patriarch watched Lin Haoran's action of pouring salt water, and his flesh was painful. Not to mention this quicklime, alkaline flour and soybean oil cost a lot of silver, and now they don't pay for salt, and they are secretly shouting in their hearts that they are doing evil.

However, thinking about the silver that Shen Liuye transported, he felt that it was only reasonable to squander it like this. But looking at all kinds of operations, this soap thing is really expensive, and it is indeed not something that ordinary people can make.

In order to obtain a higher purity soap, Lin Haoran carried out a heated alkali precipitation treatment, and after the alkali precipitation was completed, a thick layer of yellow translucent solid floated on the solution.

Tiger Girl has been helping by the side and secretly jaunting down the steps.

Lin Haoran carefully took a white porcelain bottle and poured these essential oils from the petals into it, which immediately overflowed with fragrance and made people feel intoxicated.

He carefully scoops the soap into a special mold and presses the yellow, translucent solids into the shape of the soap, which only needs to be dried to create beautiful pieces of soap.

Since it is aimed at the European market, he uses the English word "Scented soap" in addition to the Chinese "Changlin". In fact, it is undoubtedly best to use the Portuguese style, but who made him not learn a few foreign languages in the first place, and he did not have the experience of soaking Portuguese girls?

In these subsequent processes, Lin Haoran handed over the work to others to complete, after all, other people's hands are more skillful.

In order to cooperate for a long time and improve the quality of "Changlin Soap", Lin Haoran provided flower cloth and asked the women in the village to embroider soap bags of corresponding size, each of which gave them a considerable reward.

This move made the village lively in an instant, and many women knew how to sew work.

Those women who married in Changlin Village also returned to their parents' homes with their children. There is not only fragrant meat here, but also considerable income, which has improved the status of people in Changlin Village a lot.

In the past, they all disliked the poverty of Changlin Village, and the entire Qingye Town spread the word "marrying a girl does not marry a Changlin Guy, and carrying the burden of water and eating sorrow breaks the intestines", but now it is a 180-degree change, and many women are talking to the men in the village.

In fact, in addition to this kind of cloth bag, Lin Haoran also wanted to get some small wooden boxes to raise the compulsion of soap to the level of spices. But the time was too rushed, and he had to go to the exam.

The official document for the scientific expedition has finally arrived, and the time is set for August 18.