JoshuaV
Bluelighter
Still don't get the difference between #3 and #4 from chemical point of view besides additives (cooffeine, qunnine etc.) Both are salts (hcl), right? What else?
And why glacial acetic acid? It'll ruin the whole thing. It's acetic anhydride, which is always (and only) used. Acetic anhydride doesn't dissolve in water, while glacial acid does. By the way, that "vinegar" smell is the smell of anhydride, and it smells close but not exactly like vinegar.
Wrong: #3 is a base, #4 is a salt. I think that's pretty much the only difference.