What is in Dimethyl Benzyl Ammonium Saccharinate?

Yes

You Betcha! Chlorine Gas, a biproduct of its chemical reaction (Mixture you specified) is deadly, Its also corrosive so you will "rust in peace"....don't play with chemicals!

It is slightly basic (as amines are) but it is neutral and not ionic (Cf. NH3)

Ammonium nitrate is NH4NO3 and is formed by reacting ammonia (NH3) with nitric acid (HNO3). Ammonium sulfate is (NH4)2SO4 and is formed by reacting ammonia (NH3) with sulfuric acid (H2SO4)

Two (2)