Thanks for that link, Lex. I've tried to point out some of these concepts on previous threads about poppers specifically, or recreational drugs in general. To set the record straight, poppers are nitrites, not nitrates. The general class of compounds is alkyl nitrites, which indicates an alkyl group with an attached nitrite. Alkyl group is is the general name for a simple carbon-hydrogen arrangement. A one-carbon group is a methyl group. The simplest alkane (or alkyl molecule) is methane, one carbon, 4 hydrogens. Subsitute a hydroxyl (oxygen-hydrogen) group for one of the hydrogens, and you get methyl alcohol. We are all more familiar with the next-simplest, the ethyl group. 2 carbons, 6 hydrogens. Ethane (gas), ethyl alcohol (ethanol, or grain alcohol, the one that gets you drunk). If you react one of the simple alcohols (methyl, ethyl, n-propyl, isopropyl, butyl, etc.) with a nitrite source (in the referenced example, sodium nitrite) and a sulfuric acid catalyst, you get your poppers plus sodium sulfate plus water. If your refinement process is not thorough, you still have traces of the sulfuric acid remaining.
These are fairly effective volatile solvents, but are not in widespread industrial use.
For those of you not familiar with the "Analog Act" referenced in the wikipedia article, it was passed in response to the whirlwind of "designer drugs" that came out in the 1980s. Prior drug laws in the US had to specify the chemical structure of a drug to make it illegal. Sly home drug-making chemists figured out that you can take one drug that is illegal, make a slight, non-bioactive change to the structure, and suddenly you have a drug with almost identical effects, but is not strictly "illegal." Making ecstasy became all the rage, because, simply stated, all you had to do was take an illegal amphetamine, add another methyl group, and you have a legal amphetamine. Lawmakers saw that they were fighting a losing battle, because home drug-labs were inventing these designer drugs faster than laws could be passed against them... so the law makes illegal any compound with a basic chemical structure, rather than regulating specific, complete structure. They applied this law to the alkyl nitrites in the same way. I'm sure it won't be long before the Analog Law is expanded to include "alkyl, aromatic, or other nitrites".
Mmmm, yummy... organic solvents to increase sexual pleasure... mmmm....