Synthesis of Hydrazine Sulfate: Part 2

Hydrazine sulfate is prepared from readily available chemicals using the Hofmann rearrangement. Workup of the product is designed to prevent exposure to toxic hydrazine fumes, an important consideration for the amateur experimenter lacking a fume hood. The mechanism of the Hofmann rearrangement is also discussed.

Category:

Science & Technology

Tags:

• hydrazine
• sulfate
• hydrazinium
• bisulfate
• synthesis
• chemistry
• amateur
• mechanism
• Hofmann

[vmelkon]

Why isn't there any MEK in Canadian hw stores?

[UC235]

@vmelkon I don't know. In fact, I recently discovered that the company (Kleanstrip) producing the only MEK I can find in my area has discontinued the product. I went out and searched hardware stores for any remaining cans. I could only find a gallon can that was kind of beaten up. I bought it anyway, and it was fortunately discounted significantly. Also very nice is that the replacement product is pure ethyl acetate.

[g3ov4n12]

Why didnt you used absolute ethanol to rinse? Since hydrazine sulfate is insoluble in it.

[UC235]

@g3ov4n12 Because the impurities may be insoluble in absolute ethanol and if they precipitate and get caught on the product, what good does washing it do for me? Hydrazine sulfate is not that soluble in ice water so I'm not losing much. That's how washing works, generally. You trade a little yield for improved purity.

[hkparker]

Can I do a promotional video about you on my channel?

[UC235]

@hkparker Feel free to. I'd appreciate it a lot! I should have more good stuff coming up soonish, not making any guarantees on time.

[RatkoUSA]

Great explanation, bravo.

[myst32YT]

Very Cool!! Thanks!!

[69iron69]

I have made hydrazine also by mixing H2O2 and ammonia in a stainless steel mug. I believe the mug had nickel in it which serves as a catalyst. Now you're probably wonering how i new it was hydrazine right? I knew it was hydrazine because when mixed with Cu(II)SO4 it formed a dark brown ppt instead of a dark blue Cu(II) amine complex. I think the dark brown ppt was copper reduced out of solution. Good vid.

[ConorC96]

Could you also do a video on the suzuki catalyitic process?

[hkparker]

@UC235 Ok ill get on it, I'm going to do another sub4science video soon so it will be in there. Im glad your making videos, most channels on youtube dont go into as much detail as yours.