[TheForge] Re: Iron Pickle Vol 75, Issue 24

[Mike Spencer]

> i asked the question to my former biochemistry professor Peter Weber
> in Florida, His answer:
>
>   FePO4 or ferric phosphate is most likely the compound that will
>   eventually form in a phosphoric acid solution of iron as the
>   initial ferrous form is slowly oxidized in a container exposed to
>   air to the ferric form which ismuch less soluble in water than the
>   ferrous phosphate. Whitish crystals are indeed the form in which
>   the ferrous phosphate crystallizes.

Thanks, Lee.  Fe(III) phosphate is supposed to be yellow.  Or maybe
kinda tannish. Or maybe it's white. Ish.  Fe(II) phosphate is supposed
to be white or bluish.  But both a supposed to be soluble in acid.  My
phosphoric acid bath deposits aren't soluble in HCl strong enough to
eat the galvanizing of of iron pipe in minutes.

Ho hum.

Have you noticed that when you're looking for *real* technical info
(IT excepted) on the net, all the sources are at sites that want you
to pay for the papers?  In an era when the research people have to pay
the journals for printing their papers, that's very irritating.  Well,
I chose to live 75 miles from the nearest University library -- close
enough that I can drive up there and read the tech journals for free
if I really want to know something.  Far enough that I don't so it
very often.


Tnx,
- Mike

-- 
Michael Spencer                  Nova Scotia, Canada       .~. 
                                                           /V\ 
mspencer at tallships.ca                                     /( )\
http://home.tallships.ca/mspencer/                        ^^-^^