In the late 1950s and early 1960s, tobacco companies began adding ammonia or diammonium phosphate to tobacco to improve the taste of cigarettes.
This produces a nicotine "free base" form that allows for faster inhalation of blood during smoking, making smokers more satisfied and thus dominant in the tobacco market for decades.
To separate nicotine from tobacco leaves, it is first converted to its free base form and then extracted using a solvent.
This free radical nicotine is most commonly used for atomization in Vape, but the nicotine absorption rate is lower compared to cigarettes. This may be due to the larger size of the vapor particles compared to tobacco particles, resulting in inability to penetrate deep into the lungs (usually producing the fastest nicotine acquisition rate deep in the lungs).
What is nicotine salt?
By investigating the monitoring heart rate, user-satisfied satisfaction, and measuring plasma nicotine levels in the test participants, it was found that some nicotine-containing preparations containing organic acids evaporate to produce nicotine equivalent to cigarettes.
In addition, these formulations improve nicotine stability (longer shelf life) and reduce the damage to the throat caused by free nicotine used by vaper (feeling milder).
That's why some people believe that nicotine salt is more useful for people who quit smoking, because nicotine has a greater effect on smokers, and when smokers turn to Vaping, they are more satisfied.
One such formulation is nicotine benzoate, which is formed by the addition of benzoic acid to nicotine. This is also the most commonly used nicotine salt formula in the US's popular small smoke equipment.