How to make Napalm

How to make Napalm

Napalm is a sticky very flammable substance usually used in military incendiary (fire) devices and explosives. Very commonly utilized with flame throwers as fuel. It is desirable by the military because the fuel sticks to its target and is very difficult to remove, also it is difficult to use water to extinguish it since its oil component is not soluble, in a flame thrower device its high viscosity keeps it from dispersing as an aerosol such as with normal petrol at high pressue, that is you can throw it for a long distance from the flame thrower nozzle without it dispersing in short distances as normal petrol does. Finally the oil or polymer component of napalm burns for a lot longer than normal petrol. (the term petrol will be used instead of 'gas' to avoid confusion).

There are two primary ways to make napalm. One is to use soap and petrol. Generic soap bars are needed, that is basic soap without perfumery or hand cream additives. The soap is shredded using a food shredder and equal volumes of soap and car petrol (half/half) are added together and stirred until thick and sticky. This can be placed in a container and pressurized through a spray nozzle using compressed air.

The other technique used is to use motor oil instead of soap. This is a better solution since motor oil is in liquid form and is stirred easily into petrol.

The fuel and the oil should all be highly flammable. Other white fuels can be used instead of car petrol but these will have to be very flammable such as diesel fuel. For simpler applications the less flammable white fuels can be used but for use with explosives petrol is a better solution as it reacts better to the explosive driver and is directed to its final destination more effectively than with viscous white fuels.

Very importantly it is very dangerous to add explosve substances directly to the napalm liquid. This is because petrol reacts with oxidizing agents and can cause a spontaneous combustion accident.

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How to make Napalm