From what little I’ve read most companies closely guard their salts formula. Truth is they generally use a combination of the acids. I’ve been mixing with salts for around 5y now and used several different brands; not much difference between them outside of some color faster than others. Taste and effectiveness of strength has little to zero difference when the salts color in my experience.
Well, this gets into a complex area of compounds, pH and absorption. As you are new, Benzoate is the most popular as it doesn’t affect taste much. Also, the pH makes it softer, the hit isn’t harsh, and is not a coilkiller.
When you find a style, or styles, then you can choose ones to suit your specific needs: I insist on Malate for cocktails.
Generally yes and a higher pH is more likely to cause vaper’s tongue. Though for taste perception, it’s worth noting that almost all tobaccos have a high pH: Perique being the main exception.
for those who interested, here is the information I got from NicSelect support on the question I originally asked/posted above.
Here below is the percentage of sales among all salts and a brief explanation of the characteristics of the salts:
Nicotine Benzoate: nearly 30%. This is the most common nicotine salts and also known as the JUUL salt as they started using it in their pod devices years ago. It results to give an easy and soft throat hit.
Nicotine Salicylate: nearly 30%. More natural salt but still keeping a consistent nicotine hit. Mainly acting within the mouth, this is a good fit with fruity flavour.
Nicotine Levulinate: nearly 25% and growing fast. This salt is the most growing we have in our portfolio as levulinic acid act to desensitize the throat and allows vapers to consume high nicotine concentrations without feeling the throat irritation. This is mainly used in pod devices and disposables.
Nicotine Lactate: nearly 10%. This is the most natural nicotine salts and act in the same way as nicotine benzoate. Some customers find this nicotine salt to have an impact on the flavour and tend to prefer the other salts for new E-liquids (Salicylate or Levulinate)
Nicotine Ditartrate: lower than 5%. This salt saw a huge interest at the beginning when vaping companies had to resemble the sensation of smoking traditional cigarettes. This is the most acidic salt and giving the stronger throat hit, which in the existing industry is not required anymore as few years ago. Due to the acidity of the salt, this is also found to reduce coil life.