Phosphine (Things get can get nasty as you go down a group)

Ammonia, or NH3, is a mildly toxic gas (but not that bad - you use it in metabolism). Go down one, though, and you get more lavishly toxic.

Phosphine, or PH3, is much more toxic (go down another, to arsine, and you've got another toxic beastie). Phosphine is used in fumigation for this very reason.

Going down a group will reliably get you the bizzaro version of most chemicals. Methane, CH4, is an inert, flammable gas - silane, SiH4, isn't just flammable. It'll burn without any ignition source, going up in a puff of sand - thats right, not a whoosh of CO2 - SiO2 is the solid stuff sand and glass is made of.

Tags

More like this

A lot of science-fiction writers have spent a lot of time and energy hypothesizing silicon-based life. This isn't completely insane - if you go down a column of the periodic table, stuff tends to be the same. Fluorine, chlorine, bromine, and iodine all share properties, and so do carbon, silicon,…
The series of Breaking Bad chemicals continues (spoilers inside). Previously: phosphine, mercury fulminate. Today: hydrogen fluoride. HF is just that, H-F, or a hydrogen bound to a fluorine. All the other acids in this group - HCl, HBr, HI - are gases. What we call "hydrochloric acid" is HCl in…
Consider the air around you, which is hopefully at something like "room temperature"-- 290-300 K (60-80 F). That temeprature is a measure of the kinetic energy of the moving atoms and molecules making up the gas. At room temperature, the atoms and molecules in the air around you are moving at…
(Just a note: The giveaway period for the audiobook of The Poisoner's Handbook has ended. If your comment is not published, it's too late to be considered for a free copy. But still glad to hear your ideas! Winners to be notified on Wednesday). One of the most interesting - and I think important…

Did you watch Breaking Bad t'other day as well?

SAND! Dude, more! I totally want a sand explosion! Instant playgrounds!

Phosphine gas is also a byproduct of meth labs and it can be detected by a fishy/garlicky smell. It causes end-organ damage, so first responders in meth lab explosions, beware!

(I don't know this from personal experience btw... read about it for a class recently)

Reference:
Lineberry TW. Methamphetamine abuse: a perfect storm of complications. Mayo Clin Proc. 2006 Jan;81(1):77-84.