I have a magical world.

"Flammable oil mixture."

"After the bottle is broken, it will explode and produce a flame with strong adhesion."

Unlike the stunned Hutos Youji, the iron-headed Warmish standing at the back was obviously more calm.

There is even a summary of the effects of Molotov cocktails.

Chen Xuan turned his head and glanced at him. Warmish grinned, pulled the scars on his face, and showed an ugly smile.

I have to say that this guy summed it up very well.

Since both gasoline and alcohol-based fuels are volatile, after thorough mixing, the relatively sealed bottle will be filled with flammable gases.

However, after the incendiary bottle is ignited and thrown to pieces, the flammable gas in a compressed environment will deflagrate, quickly igniting the oil scattered around the impact point.

That's why he didn't fill the entire bottle with oil.

The brilliant flame burned on the metal target for several minutes before gradually dissipating.

The area of ​​influence of the flame is approximately five to six meters in radius.

Hutos Youji couldn't wait to lead several alchemists in the alchemy workshop to the shooting range.

In fact, this guy himself is a scholar of many materials in alchemy.

Major branch disciplines including mechanical engineering, materials alchemy and pharmacy are all involved, and all have obtained professional titles certified by the Kingdom.

After studying for a long time, it returned to Chen Xuan with a thoughtful expression on its face.

The alchemists gathered together and discussed quietly.

“These oils you prepared are special.”

"Its combustion characteristics are stable, unlike most of the flammable fluids known from Naroa."

"Mr. Chen...Xuan...Xuan, can you tell me the origin of these oils?"

Hutos Oil Machine quickly came to a conclusion.

It said Chen Xuan's name in a somewhat awkward tone, and was very curious about the origin of the oil used to make the Molotov cocktail.

In fact, there are many kinds of oils that can be ignited in Naloa.

But there are only a few that have deflagration properties.

Often alchemists like to add magical ingredients to achieve desired effects.

For example, the main materials of the "flame jar" that the Molotov cocktail is aimed at are the powder of fire element gems and the grease of fire monsters. As long as the magic element is input and activated, the flames can be detonated.

In terms of combustion effect alone, it is better than a Molotov cocktail, but the cost is very high.

Although the powder of elemental gems is leftovers, the quantity is not large.

And the oil under the skin of a fire beast can only make about eight or nine flame jars.

Not to mention that there is a risk of overturning during production. If you are not careful, the two exploding fire-based materials will ignite prematurely and cause an accident.

On the other hand, the Molotov cocktails brought by Chen Xuan were not only simple to prepare, but the risks in the production process were also very low.

Therefore, Hutos Oil Machine is not interested in the process, but rather in the mixed oil itself.

Flammable oils and greases are plentiful on both Naloa and Blue Star.

The most typical example is vegetable oil.

The cooking oil that is a must-have in every Blue Star home is itself a flammable oil liquid.

However, the ignition point of most cooking oils must reach more than 200 degrees Celsius before they can ignite an open flame.

When used as fuel for oil lamps, it is easier to perform local combustion.

Solid cooking oils, such as animal fats, also have similar characteristics. They will produce pyrolysis and combustion effects after entering the melting and boiling point.

Therefore, flammable oil fluids are not actually a rare thing.

This time involves a concept that often appears in hazardous chemicals:

Flash point, fire point, autoignition point.

It is known that liquids like gasoline evaporate, and the higher the temperature, the faster they evaporate.

When the volatilized octane and olefin naphthenic vapors are mixed with air, sparks can flash out when exposed to a fire source, but they are extinguished and cannot continue to burn. This phenomenon is called flash combustion.

Under the conditions of indoor temperature 28C and relative humidity 85%, the gasoline evaporation rate is 20% after 55 minutes.

At normal temperature, 1 kilogram of gasoline volatilizes to produce approximately 400 liters of gasoline vapor.

When gasoline vapor is evenly mixed with air, it burns very quickly and completely.

The second is the concept of Randian.

If combustible substances, whether solid, liquid or gaseous, coexist with air and reach a certain temperature, they will burn when in contact with a fire source and will continue to burn after the fire source is removed.

The lowest temperature of the combustible substance at this time is called the ignition point, also called the ignition point.

A key difference between fire point and flash point is whether combustion can continue after the spark is removed.

According to the definitions of flash point and fire point, for flammable liquids, the fire point is higher than the flash point.

Finally, there is the spontaneous ignition point.

At the autoignition temperature, combustible substances come into contact with air and can burn without the action of an open flame.

The auto-ignition point of gasoline under normal atmospheric pressure is 427c, but in a compressed air environment, its auto-ignition point can be greatly reduced.

It is the difference in the three characteristics of flash point, ignition point and auto-ignition point that is the biggest difference between gasoline and alcohol-based fuels and the common oils in Naloa continent!

Hutos Oil Machine also saw through this and turned his attention to the oil itself.

Facing its questioning, Chen Xuan smiled and said nothing.

"Mr. Hutos, this is a real secret."

"And I'm not here to discuss material alchemy with you."

"I just want the alchemy workshop to help with processing."

"The Molotov cocktails produced will be used to resist demonic disasters."

Hearing his words, Hutos smiled and understood that he was being abrupt.

The origin of any mysterious material will not be easily exposed.

For example, the Naroa continent is extremely vast, and there are some specialty materials in various places. They are regarded as patents and will never be leaked.

In its opinion, these flammable fuels that can make Molotov cocktails must also have some kind of process and raw material location that needs to be kept secret.

You would never have imagined that these materials are common fuels in another world.

Seeing the change in Hutos' expression, Chen Xuan could roughly guess what this guy was thinking.

Just when it was about to answer, Chen Xuan suddenly changed the subject.

"However, this matter is not completely non-negotiable."

"Oh? You can put forward any conditions you have."

"Whether you want crowns, alchemy materials or potions, as long as you ask, everything will be easy to discuss!"

Hutos Youji rubbed his hands and expressed his expression expectantly.

Talking about business is one of its strongest areas.

As long as the other party relents, there is hope for negotiation.

But he saw Chen Xuan grinning.

"My terms are simple,"

"As long as you and all the alchemists in the alchemy workshop who have the third-level mechanical engineering, material alchemy and pharmacy titles sign a limited-time slave contract with me, then I will tell you all the origins of these oils."

Using greed as a thread and oil as bait, Chen Xuan sat by the river and fished for these goblin alchemists.