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Topic: Red Phosphorus  (Read 4886 times)

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IceD

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Red Phosphorus
« on: February 03, 2005, 04:03:19 PM »
Where is Red P. most available?  What chemical has the closest chemical make up?

Offline Mitch

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Re:Red Phosphorus
« Reply #1 on: February 03, 2005, 04:14:56 PM »
try ebay.
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Re:Red Phosphorus
« Reply #2 on: February 03, 2005, 04:18:57 PM »
Red P is found in small amounts on matchbooks, and can be prepared by UV irradiation of a solution of white phosphorus in carbon disulfide with a mercury vapor lamp, white P is very soluable in CS2, whereas red P is is insoluable and will precipitate out.

White P can of course, be distilled from reducing phosphate fertillizers at a high temperature with a stoichiometric amount of carbon and SiO2.

Look on www.sciencemadness.org for threads on production of white phosphorus.

And remember, if you haven't worked with white P before, its toxic, with a LD50 of roughly 50mg, and it is pyrophoric, igniting at just a few degrees over room temperature, the slow decomposition in air also self catalyses itself by insulation, the decomposition producing increasing heat, and causing the white phosphorus to ignite.
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