RE: Pt IV to Pt II

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From: Monnoyer Philippe (monnoyer@imec.be)
Date: 02/12/03-06:07:12 AM Z


Alberto,

I am a chemist. I would advise you not to use hydrazine at all. It is a really toxic chemical, and carcinogenic.
A awful lot of alternative salts will reduce PtIV to PtII,

Philippe

|-----Original Message-----
|From: Alberto Novo [mailto:alnovo@inwind.it]
|Sent: Wednesday, February 12, 2003 10:13
|To: alt-photo-process-l
|Subject: Re: Pt IV to Pt II
|
|
|Thank you, Jacques.
|Only some chemistry quiestions:
|
|> Dissolve 10 gr. of H2PTCL6.6H2O in 100 ml of distilled
|water, add 3.2
|> gr. of (potassium chlorate) KCLO3, dissolved in 30 ml of distilled
|> water and agitate, this will precipitate K2PTCL6.
|
|Why not simply potassium chloride (KCl)?
|
|> With the yellow precipitate on the filter wash it three
|times with ether
|> and let it dry until the smell of ether has disappeared.
|
|Can acetone substitute ether?
|
|
|> The dry salt
|> should be put in a Beaker of 100 ml containing 70 ml of
|distilled water
|> and should be reduced by an addition of sulfurous gas
|recently prepared.
|
|I am wondering if hydrazine sulphate might be used, in
|stoichiometric amount.
|
|Alberto
|
|


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