Debbie,

I’m pretty sure that liquid hydrogen and liquid oxygen do NOT qualify as “hypergolic” – there IS an ignition source req uired to ‘start’ those engines (watch the next launch, and you’ll see the ‘sparklers&# 8217; going of just before main engine ignition).

With slightly clenched teeth, I’ll copy the link below

http://e n.wikipedia.org/wiki/Hypergolic

to the Wikipedia entry – there is a nice list (brief) of common hypergolic mixtures, plus some good history (if the writer knew what they w ere talking about, which is the caveat that always applies to Wiki entries̷ 0;)

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Red fuming nitric acid and hydrazine is another.  And the most familiar one of all – liquid oxygen and liquid hydrogen – the s pace shuttle fuel.

Debbie

------------------------

Debbie Decker

EH&S UCDavis

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Birkett's hypothesis: "Any chemical reaction

that proceeds smoothly under normal conditions,

can proceed violently in the presence of an idiot."

---

From: DCHAS-L Discu ssion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of William Crouse

Nitrogen tetro xide and hydrazine (or unsymmetrical dimethyl hydrazine) are two that I am aware of....

 

Bill

 

William E. Cro use, MS, CIH, CSP, CHMM
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 >> > Suzanne Hamm <suzanne**At_Symbol_Here**POLYMERSOLUTIONS.COM> 8/4/2009 3:51:01 PM >>>

Does anyone have a list of chemicals that when combined cause hypergolic reactions? Just wondering because this warning came with our ICP , but have not been able to locate a list of common ones.

Thanks
Suzanne Hamm