Would not surprise me at all that is what was in the product.
The bigger item is the "neutralizing" of salt. That chemically is not possible. If the corrosion was due to Ph (acidic or basic) then you can neutralize it by changing the Ph back to 7.0. The issue with Salt is it speeds up the normal rusting process (oxidation). It is a chemical reaction that is speed up by increasing the free electron present in salt (and salt water). Current flows more easily in salt water than it does in fresh water. This is because salt water, an electrolyte solution, contains more dissolved ions than fresh water, meaning electrons can move more easily. Since rusting is all about the movement of electrons, iron rusts more quickly in salt water than it does in fresh water.
So the moral of the story, Dilution is the Solution to Salt causing rust! Wash and wash again to get the salt off! Yes soap helps remove the salt as it helps the surface tension. Be careful not to use high pressure as it can drive the salt under seals and into areas you cannot get too! Rinse and rinse again. Then coat with a protective oil (Gun oils work great! as to Lanolin oils such as Fluid Film) That is how you help slow the rust monster. There is no Magic chemical that can Neutralize Salt.