RE: Gold Chloride

From:Jim at ProSciTech <jim@proscitech.com>

Looking at the old Merck Index this compound for nerve staining and making of 
gold sols, has several other names and the formula can be differently arranged. 
Chloroauric acid; hydrogen tetrachloroaurate; gold trichloride, acid; 
hydrochloroauric acid; aurochlorohydric acid. Our material has the formula 
H(AuCl4) :H2O. F.W. 229.79 and apparently works well in histo.
Incidentally, its a DG and therefore not economic to ship overseas.
Those not familiar with the compound should also note that its caustic, very 
hygroscopic and breaks down in light; so minimize exposure to light.
Cheers
Jim Darley
ProSciTech                 Microscopy PLUS
PO Box 111, Thuringowa  QLD  4817  Australia
Ph +61 7 4774 0370  Fax:+61 7 4789 2313  service@proscitech.com
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On Thursday, November 09, 2000 11:13 PM, Dr. Ian Montgomery. 
[SMTP:ian.montgomery@bio.gla.ac.uk] wrote:
> Andrea,
>          Gold chloride and which one to use. Simple, what will it be used 
for?
>
> Nerve staining.  Use Chloroauric acid (H Au Cl2 H2O) - commonly know as
> brown Gold chloride.
> Toning.  Use Sodium chloroaurate (Na Au Cl4 2H2O) - commonly referred to as
> yellow Gold chloride.
>
> Ian.
>
> >Date: Wed, 08 Nov 2000 18:03:55 -0600
> >From: Andrea Voogt <ndrvgt@dordt.edu>
> >Subject: Gold Chloride
> >To: histonet@pathology.swmed.edu
> >
> >I'm trying to get the ingredients for the Bielschowsky-Foot stain, and the
> >recipe calls for "gold chloride."  However, it doesn't specify whether I
> >should use gold (I) chloride or gold (III) chloride.  Does anyone know
> >which gold chloride I should use?
> >Thanks,
> >Andrea Voogt
> >Dordt College
>
> Dr. Ian Montgomery,
> West Medical Building,
> University of Glasgow,
> Glasgow,
> G12 8QQ.
> Tel: 0141 339 8855.  Extn:6602.
> Fax: 0141 330 2923
> e-mail: ian.montgomery@bio.gla.ac.uk << File: ATT00003.html >> 




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