RE: VDB test results: related concerns

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From: Liam Lawless (liam.lawless@blueyonder.co.uk)
Date: 12/08/02-10:35:29 PM Z


Sandy,

If you want to make your own, Tiron is 4,5-dihydroxy-1,3-benzenedisulphonic
acid, disodium salt monohydrate, (HO)2C6H2(SO3Na)2.H2O. Don't know anything
about it myself, but you might find some info on Mike Ware's site. In my
Aldrich catalogue it's 7.80 GB pounds (around $12) for 25 g, or 22 GBP ($33)
for 100 g.

Liam

-----Original Message-----
From: Judy Seigel [mailto:jseigel@panix.com]
Sent: 09 December 2002 04:00
To: alt-photo-process-l@sask.usask.ca
Subject: Re: VDB test results: related concerns

On Sun, 8 Dec 2002, Sandy King wrote:

>
> Thanks for the tip. Never heard of TIRON. Would be interested in the
> formula if you can locate it.

Was in a classic CHEMISTRY manual in the Pratt library. About 10 years
ago. But I assume it would be in any comprehensive chemistry reference
work.

J.


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