The difference in the standard is the content of lead, the specified value of the lead content of AVG 100 LL is lower than AVG 100.
Next there is a difference in color, 100 is colored in the green, while 100 LLL is blue.
This is artificially colored to avoid confusion of oil type, so it does not matter to performance.
The lead content of AVG 100 in Japan has cleared the specified value of AVG 100 LL. It meets anti-knocking property with minimum lead content.
※ Those with current domestic handling are Avgas 100 LL.

Both products are the same as being high quality gasoline tailored to the purpose of use.
Compared to gasoline for automobiles, aviation gasoline has more stringent conditions such as antiknock property, lead vapor pressure, oxidation stability.
Therefore, aviation gasoline is manufactured with light gasoline based on high octane number alkylate.
Gasoline for automobiles is made by preparing contact reformate gasoline, catalytically cracked gasoline, light straight run gasoline etc.
Also, as main additives, 4-lead lead for aviation gasoline and MTBA for automotive gasoline are improving anti-knock performance.

JET A – 1 seems to have some additives added to the hydrotreated kerosene fraction. Additives are antioxidants, metal deactivators, antistatic agents, etc.
Also, in order to satisfy the required performance of JET A-1, there are few aromatic hydrocarbons due to carbon accumulation, and important folding points are important for flying high altitude, and there are various regulations and it satisfies it It is manufactured as such.
Heating kerosene contains a large amount of paraffinic hydrocarbons to increase combustibility, sulfur content to generate harmful sulfur dioxide gas is specified to be small.
JET A – 1 is refined from the same kerosene fraction as kerosene, but after that it will be different depending on each application.

JET A – 1 falls under the taxable property of volatile oil tax, but we do not process tax exemption after we do the procedure of kerosene duty exemption at factories etc.
If you use it for aircraft, you will be charged separately for aviation fuel tax.

The main ingredient of kerosene used for JET A – 1 and for heating is the same kerosene fraction.
Depending on the purpose of use, there are differences, it is the presence or absence of additives and the cost by the storage management method.
Kerosene burned at low temperature and often used indoors has no additives such as smoke, but because of its high consumption, JET fuel with a high flow rate of the fuel itself has safety concerns such as antistatic agent Additives are contained.
However, these additives are impurities only for fuels and may remain as soot if burned at low temperature, so it is not a good thing for the engine.
Also, in the case of an airplane, even a slight breakdown of the airplane will cause a lot of damage, so we keep strict regulations regarding fuel storage and management, which is also a cause of high cost.
I can not recommend it because of the reasons mentioned above.
By the way, JET engine for ground test is often tested with kerosene.