Hydrazine is not nearly as bad as its methylated derivatives. On a related note, however, it is strange to observe how the perceived hazard of a given substance varies from country to country. In the U.S., methanol (lethal dose for ingestion = 20-40 grams) is available in some states as car fuel. In Russia, you need a special governmental authorization to buy anything containing methanol (which is probably the right thing, given the drinking habits of some people). In Russia, asbestos is a relatively common construction material. In the U.S., people would don a protective suit before touching it, blithely forgetful of the fact that there is no single mineral called "asbestos", but rather two very distinct ones: chrysotile asbestos and amphibole asbestos, the latter being some 100,000 times more dangerous than the former...