What chemicals used everyday will cause an explosive reaction if exposed into outer space?
closed as too broad by bon, jerepierre, M.A.R., Todd Minehardt, tschoppi Jan 27 '16 at 21:49
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One example for an everyday chemical that most probably will cause an explosion if exposed into outer space is liquid water at temperatures significantly above 300 K when hold in an inappropriate container. This phenomenon is called a BLEVE. But be aware that this is not an chemical reaction.